(2R)-5-(diaminomethylideneamino)-2-[[2,2-di(phenyl)acetyl]amino]-N-[(4-hydroxyphenyl)methyl]pentanamide (2R)-2-[[2,2-di(phenyl)acetyl]amino]-5-guanidino-N-[(4-hydroxyphenyl)methyl]pentanamide (2R)-5-guanidino-N-[(4-hydroxyphenyl)methyl]-2-[[1-oxo-2,2-di(phenyl)ethyl]amino]pentanamide (2R)-2-[[2,2-di(phenyl)acetyl]amino]-5-guanidino-N-(4-hydroxybenzyl)valeramide (2R)-5-(diaminomethylideneamino)-2-[2,2-di(phenyl)ethanoylamino]-N-[(4-hydroxyphenyl)methyl]pentanamide BIBP3226 B174_SIGMA BIBP 3226 N2-(Diphenylacetyl)-N-[(4-hydroxyphenyl)methyl]-D-arginine amide