129893-84-1 Cyclo-(pec1-meval2-val3-(O-t-Bu-measp4)-melle5-melle6-gly7-meval8-(O-Me-tyr)-L-hpa10) L-Tyrosine, N-(N-(N-(N-(N-(N-(N-(N-((1-(2-hydroxy-1-oxopropyl)-2-piperidinyl)carbonyl)-N-methyl-L-valyl)-L-valyl)-N-methyl-L-alpha-aspartyl)-N-methyl-L-isoleucyl)-N-methyl-L-isoleucyl)glycyl)-N-methyl-L-valyl)-O-methyl-, 4-(1,1-dimethylethyl) ester, delta1-lactone, (S-(R*,R*))- Sdz 280 446 Sdz 280-446