N-<(2S,4R)-2-<amino>-4-methylheptanoyl>-N-methyl-L-leucinyl>-L-leucinyl>-N1'-methoxy-N-methyl-L-tryptophanyl>amino>-4-methylheptanoyl>-N-methyl-L-alanine methyl ester

(R)-5-methyl-7,11-dioxo-10-methoxycarbonylheptadeca-1,16-diene