L-Tryptophan,L-valylglycyl-L-seryl-1-[carboxy[[N-[1-(5-oxo-L-prolyl)-L-prolyl]-L-tyrosyl]amino]methyl]-,cyclic (41®
L-Tryptophan, L-valylglycyl-L-seryl-1-[(R)-carboxy[(5-oxo-L-prolyl-L-prolyl-L-tyrosyl)amino]methyl]-, (41→1)-lactam ·
L-Tryptophan, L-valylglycyl-L-seryl-1-[(R)-carboxy[(5-oxo-L-prolyl-L-prolyl-L-tyrosyl)amino]methyl]-, (41→1)-lactam ·