2-[3-[3-(R)-[[(2-cis-Cyclopentyl-1,1-dioxotetrahydrothienyloxy)carbonyl]amino]-4-phenyl-2(R)-hydroxybutyl]]-N-(1,1-dimethylethyl)decahydro-3-isoquinolinecarboxamide AIDS-006129 AIDS006129 IsoquinCON thienyl urethane analog