2-Oxabicyclo[2.2.1]heptane-1-carboxylic acid, 4,7,7-trimethyl-3-oxo-, (9R,10R)-1-(2,2-dimethyl-1-oxopropyl)-1,8,9,10-tetrahydro-3,4,8,8-tetramethyl-2-oxo-2H-pyrano[2,3-h]quinoline-9,10-diyl ester AIDS-185465 AIDS185465