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
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