L-Tyrosine, N-(N-(N-(N-(N-(N-(N-(N-((1-(2-hydroxy-1-oxopropyl)-L-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-, delta1-lactone, (R)-