174173-77-4 5-[3-[3-(R)[[(2-cis-Methyltetrahydrofuranyloxy)carbonyl]amino]-4-(phenylthio)-2-hydroxybutyl]]-N-(1,1-dimethylethyl)octahydrothieno[3,2-c]pyridine-6(S)-carboxamide AIDS-029843 AIDS029843 HOCH2CH2 isostere ThienopyridCONH furanyl urethane deriv.