(2S,4AR,4BS,6AS,13AS,13BR)-2-HYDROXY-4A,6A-DIMETHYL-2,3,4,4A,4B,5,6,6A,13,13A,13B,14-DODECAHYDRO-1H-NAPHTHO[2',1':4,5]INDENO[1,2-B]QUINOLINE-12-CARBOXYLIC ACID