Mertansine

Chemical Name: N2'-Deacetyl-N2'-(3-mercapto-1-oxopropyl)-maytansine

Smile: C[C@]1([C@@](CC(N(C(C=C2C=C3OC)=C3Cl)C)=O)([H])OC([C@H](C)N(C)C(CCS)=O)=O)[C@H]([C@@H]([C@](OC4=O)([H])C[C@]([C@](/C=C/C=C(C)/C2)([H])OC)(N4)O)C)O1