BENZENEPROPANOIC ACID, ALPHA-HYDROXY-BETA-[(2-METHYL-1-OXO-2-BUTENYL)AMINO]-,6,12B-BIS(ACETYLOXY)-12-(BENZOYLOXY)-2A,3,4,4A,5,6,9,10,11,12,12A,12B-DODECAHYDRO-4,11-DIHYDROXY-4A,8,13,13-TETRAMETHYL-5-OXO-7,11-METHANO-1H-CYCLODECA[3,4]BENZ[1,2-B]OXET-9-YL E