Formula: C20H26O5 | Mol. Weight: 346.40 g/mol
IUPAC: (1S,5S,5'R,6S,9R,11R)-11-hydroxy-5'-(hydroxymethyl)-4',4'-dimethyl-10-methylidenespiro[3-oxatricyclo[7.2.1.01,6]dodecane-5,6'-cyclohex-2-ene]-1',2-dione
CC1(C=CC(=O)C2(C1CO)COC(=O)C34C2CCC(C3)C(=C)C4O)C