IUPAC:(2R,7'S,18'R,20'S)-20'-bromo-18'-hydroxy-5,7',9',13'-tetramethyl-19'-oxo-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icosan]-16'-yl acetate
IUPAC:(2R,7'S,18'R,20'S)-20'-bromo-18'-hydroxy-5,7',9',13'-tetramethyl-19'-oxo-5'-oxaspiro[oxane-2,6'-pentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icosan]-16'-yl acetate