preferred_name: (2AR,4S,4AS,6R,9S,11S,12S,12AR,12BS)-12B-(ACETYLOXY)-12-(BENZOYLOXY)-2A,3,4,4A,5,6,9,10,11,12,12A,12B-DODECAHYDRO-6,11-DIHYDROXY-4A,8,13,13-TETRAMETHYL-5-OXO-4-(((2,2,2-TRICHLOROETHOXY)CARBONYL)OXY)-7,11-METHANO-1H-CYCLODECA(3,4)BENZ(1,2-B)OXET-9-YL (.ALPHA.R,.BETA.S)-.BETA.-(((1,1-DIMETHYLETHOXY)CARBONYL)AMINO)-.ALPHA.-HYDROXYBENZENEPROPANOATE