(3S,4aS,8aS)-2-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-N-(tert-butyl)decahydroisoquinoline-3-carboxamide;[3S-[2(2S*,3R*),3?,4a?,8a?]]-2-(3-Amino-2-hydroxy-4-phenylbutyl)-N-(1,1-dimethylethyl)decahydro-3-isoquinolinecarboxamide; Saquinavir Impurity C (EP)
