label: N2-((2S)-2,6-diaminohexyl)-l, -lysyl-l, -prolyl-l, -tryptophyl-3-methyl-l, -valyl-l-leucine ethyl ester tetrahydrochloride hydrate
label_lc: n2-((2s)-2,6-diaminohexyl)-l, -lysyl-l, -prolyl-l, -tryptophyl-3-methyl-l, -valyl-l-leucine ethyl ester tetrahydrochloride hydrate