Structure based on 1r0p

Ideal structure
Name: k-252a
Formula: C27 H21 N3 O5
Weight: 467.473
SMILES: "COC(=O)[C]1(O)C[CH]2O[C]1(C)n3c4ccccc4c5c6CNC(=O)c6c7c8ccccc8n2c7c35"
Spacial conformation based on PDB 1r0p.
Also present on 3eqf, 4kik, 4wsq
RESIDUE   KSA     56
CONECT      O3     1 C22 
CONECT      C22    3 O3   O5   C1  
CONECT      O5     2 C22  C26 
CONECT      C26    4 O5   H261 H262 H263
CONECT      C1     4 C22  O4   C2   C27 
CONECT      O4     2 C1   HO4 
CONECT      C2     4 C1   O1   C25  N1  
CONECT      O1     2 C2   C24 
CONECT      C25    4 C2   H251 H252 H253
CONECT      N1     3 C2   C3   C10 
CONECT      C3     3 N1   C4   C8  
CONECT      C4     3 C3   N2   C5  
CONECT      N2     3 C4   C24  C17 
CONECT      C24    4 O1   N2   C27  H24 
CONECT      C27    4 C1   C24  H271 H272
CONECT      C17    3 N2   C18  C16 
CONECT      C18    3 C17  C19  H18 
CONECT      C19    3 C18  C20  H19 
CONECT      C20    3 C19  C21  H20 
CONECT      C21    3 C20  C16  H21 
CONECT      C16    3 C17  C21  C5  
CONECT      C5     3 C4   C16  C6  
CONECT      C6     3 C5   C15  C7  
CONECT      C15    3 C6   O2   N3  
CONECT      O2     1 C15 
CONECT      C7     3 C6   C23  C8  
CONECT      C23    4 C7   N3   H231 H232
CONECT      N3     3 C15  C23  HN3 
CONECT      C8     3 C3   C7   C9  
CONECT      C9     3 C8   C10  C14 
CONECT      C10    3 N1   C9   C11 
CONECT      C11    3 C10  C12  H11 
CONECT      C14    3 C9   C13  H14 
CONECT      C13    3 C14  C12  H13 
CONECT      C12    3 C11  C13  H12 
CONECT      H261   1 C26 
CONECT      H262   1 C26 
CONECT      H263   1 C26 
CONECT      HO4    1 O4  
CONECT      H251   1 C25 
CONECT      H252   1 C25 
CONECT      H253   1 C25 
CONECT      H24    1 C24 
CONECT      H271   1 C27 
CONECT      H272   1 C27 
CONECT      H18    1 C18 
CONECT      H19    1 C19 
CONECT      H20    1 C20 
CONECT      H21    1 C21 
CONECT      H231   1 C23 
CONECT      H232   1 C23 
CONECT      HN3    1 N3  
CONECT      H11    1 C11 
CONECT      H14    1 C14 
CONECT      H13    1 C13 
CONECT      H12    1 C12 
HET    KSA             56
FORMUL      KSA    C27 H21 N3 O5

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