IUPAC: (1R,2R,5R,9S,10S)-5-ethenyl-2,9-dihydroxy-5,11,11-trimethyl-16-oxatetracyclo[7.5.2.0^{1,10}.0^{2,7}]hexadec-6-ene-8,15-dione

SMILES: [H][C@@]12[C@]3(O)OC(=O)[C@@]1(CCCC2(C)C)[C@@]1(O)CC[C@](C)(C=C)C=C1C3=O |c:24|