1,4-Dioxa-8,11-diazacyclohexadec-13-ene-2,5,9,12-tetrone, 10-((3-chloro-4-methoxyphenyl)methyl)-6-methyl-3-(2-methylpropyl)-16-(1-(3-phenyloxiranyl)ethyl)- 10-((3-Chloro-4-methoxyphenyl)methyl)-6-methyl-3-(2-methylpropyl)-16-(1-(3-phenyloxiranyl)ethyl)-1,4-dioxa-8,11-diazacyclohexadec-13-ene-2,5,9,12-tetrone 124689-65-2 Cryptophycin 1 cryptophycin