Structure based on 1ld8

Ideal structure
Name: (20s)-19,20,21,22-tetrahydro-19-oxo-5h-18,20-ethano-12,14-etheno-6,10-metheno-18h-benz[d]imidazo[4,3-k][1,6,9,12]oxatriaza-cyclooctadecosine-9-carbonitrile
Formula: C26 H21 N5 O2
Weight: 435.477
SMILES: "O=C1[CH]2CCN1c3cccc4ccc(Oc5cc(Cn6cncc6CN2)ccc5C#N)cc34"
Spacial conformation based on PDB 1ld8
RESIDUE   U49     54
CONECT      C1     3 C2   C3   C4  
CONECT      C2     3 C1   N5   C6  
CONECT      C3     3 C1   C7   C8  
CONECT      C4     3 C1   C9   H41 
CONECT      N5     3 C2   C10  C11 
CONECT      C6     3 C2   C12  H61 
CONECT      C7     3 C3   C13  H71 
CONECT      C8     3 C3   C12  H81 
CONECT      C9     3 C4   C13  O14 
CONECT      C10    4 N5   C15  H101 H102
CONECT      C11    3 N5   C17  O39 
CONECT      C12    3 C6   C8   H121
CONECT      C13    3 C7   C9   H131
CONECT      O14    2 C9   C18 
CONECT      C15    4 C10  C17  H151 H152
CONECT      C17    4 C11  C15  N54  H171
CONECT      C18    3 O14  C20  C21 
CONECT      C20    3 C18  C23  C24 
CONECT      C21    3 C18  C25  H211
CONECT      C22    4 C26  N54  H221 H222
CONECT      C23    3 C20  C27  H231
CONECT      C24    2 C20  N28 
CONECT      C25    3 C21  C27  C29 
CONECT      C26    3 C22  N30  C31 
CONECT      C27    3 C23  C25  H271
CONECT      N28    1 C24 
CONECT      C29    4 C25  N30  H291 H292
CONECT      N30    3 C26  C29  C32 
CONECT      C31    3 C26  N33  H311
CONECT      C32    3 N30  N33  H321
CONECT      N33    2 C31  C32 
CONECT      O39    1 C11 
CONECT      N54    3 C17  C22  H541
CONECT      H41    1 C4  
CONECT      H61    1 C6  
CONECT      H71    1 C7  
CONECT      H81    1 C8  
CONECT      H101   1 C10 
CONECT      H102   1 C10 
CONECT      H121   1 C12 
CONECT      H131   1 C13 
CONECT      H151   1 C15 
CONECT      H152   1 C15 
CONECT      H171   1 C17 
CONECT      H211   1 C21 
CONECT      H221   1 C22 
CONECT      H222   1 C22 
CONECT      H231   1 C23 
CONECT      H271   1 C27 
CONECT      H291   1 C29 
CONECT      H292   1 C29 
CONECT      H311   1 C31 
CONECT      H321   1 C32 
CONECT      H541   1 N54 
END   
HET    U49             54
HETSYN     U49 COMPOUND 49
HETNAM     U49 (20S)-19,20,21,22-TETRAHYDRO-19-OXO-5H-18,20-ETHANO-12,
HETNAM   2 U49 14-ETHENO-6,10-METHENO-18H-BENZ[D]IMIDAZO[4,3-K][1,6,9,
HETNAM   3 U49 12]OXATRI
AZA-CYCLOOCTADECOSINE-9-CARBONITRILE
FORMUL      U49    C26 H21 N5 O2

This OCA MONOMER page
uses Jmol, developed by the Jmol Development Team (color reference)
OCA© by Jaime Prilusky, 1996-2004,2006,2010,2014
Bioinformatics Unit
Weizmann Institute of Science