170D:
reference: Solution structure of a DNA dodecamer containing the anti-neoplastic agent arabinosylcytosine: combined use of NMR, restrained molecular dynamics, and full relaxation matrix refinement., Schweitzer BI, Mikita T, Kellogg GW, Gardner KH, Beardsley GP, Biochemistry 1994 Sep 27;33(38):11460-75. PMID: 7918360

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