(3E,5E,7R,84S)-12c-(N-acetyl-N-methyl-L-alanyloxy)-84-(3-bromo-propoxy)-14-chloro-10t,11c-epoxy-15,7r-dimethoxy-3,9c,11t,15-tetramethyl-(84r'H,86c'H)-15-aza-1(1,3)-benzena-8(4,6)-[1,3]oxazinana-cyclopentadecaphane-3,5-diene-82,14-dione
maytansine 9-O-methyl ether
(-)-maytansinol
C37H57ClN2O6S2Si
3-O-(tert-butyldimethylsilyl)-4,5-deoxymaytansinol