8-(10,13-Dimethyl-1-oxo-4,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-5-methyl-4-methylene-2,6-dioxa-bicyclo[3.3.1]nonan-3-one AIDS-134076 AIDS134076 NSC631452 Withametelin