57449-34-0 Benzenepropanamide, alpha-(acetylamino)-N-(1-(hydroxymethyl)-2-phenylethyl)-, (S-(R*,R*))- N-Acetyl-L-phenylalanyl-L-phenylalanine alcohol N-Acetyl-phe-phe alcohol N-Acetylphenylalanylphenylalanine alcohol