IUPAC:methyl (1'S,2R)-12'-hydroxy-5,5-dimethyl-3',10',19'-trioxo-5H-spiro[furan-2,20'-pentacyclo[10.7.1.0^{2,11}.0^{4,9}.0^{13,18}]icosane]-2'(11'),4'(9'),5',7',13'(18'),14',16'-heptaene-1'-carboxylate
IUPAC:methyl (1'S,2R)-12'-hydroxy-5,5-dimethyl-3',10',19'-trioxo-5H-spiro[furan-2,20'-pentacyclo[10.7.1.0^{2,11}.0^{4,9}.0^{13,18}]icosane]-2'(11'),4'(9'),5',7',13'(18'),14',16'-heptaene-1'-carboxylate