9,11a-Methano-11aH-cyclohepta[a]naphthalen-8(9H)-one, 1,2,3,4,4a,5,6,10,11,11b-decahydro-6-hydroxy-4,4,9,11b-tetramethyl-, (4aS,6R,9S,11aR,11bS)- AIDS-220191 AIDS220191