英文名称
                        17-(4-[(6-{[4-(3-{2-[(9H-fluoren-9-ylmethoxy)carbonylamino]acetoxy}-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoyl](methyl)amino}hexa-2,4-diynyl)(methyl)amino]-1-methyl-4-oxobutyl)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl 2-(tert-butoxycarbonylamino)-3-(tritylthio)propanoate