preferred_name: 3-O-TERT-BUTYL 5-O-((1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-DIACETYLOXY-2-BENZOYLOXY-1-HYDROXY-10,14,17,17-TETRAMETHYL-11-OXO-9-(2,2,2-TRICHLOROETHOXYCARBONYLOXY)-6-OXATETRACYCLO(11.3.1.03,10.04,7)HEPTADEC-13-EN-15-YL) (4S,5R)-2,2-DIMETHYL-4-PHENYL-1,3-OXAZOLIDINE-3,5-DICARBOXYLATE