Cyclo((Z)-2,3-didehydro-N-methyl-2-aminobutanoyl-erythro-3-methyl-D-beta-aspartyl-L-arginyl-(2S,4E,6E,8S,9S)-4,5,6,7-tetradehydro-9-methoxy-2,6,8-trimethyl-10-phenyl-L-3-aminodecanoyl-D-gamma-glutamyl)