IUPAC: (1S,2E,6S,8S,11Z)-3,8,12,16-tetramethyl-7,18-dioxatricyclo[13.3.0.0^{6,8}]octadeca-2,11,15-trien-17-one

SMILES: [H][C@]12CC\C(C)=C\[C@]3([H])OC(=O)C(C)=C3CC\C(C)=C/CC[C@]1(C)O2 |c:13,19,t:5|