Formula: C21H18O6 | Mol. Weight: 366.40 g/mol
IUPAC: 6-hydroxy-20-methoxy-15,15,16-trimethyl-3,12,17-trioxapentacyclo[11.7.0.02,10.04,9.014,18]icosa-1(20),2(10),4(9),5,7,13,18-heptaen-11-one
CC1C(C2=C3C(=C(C=C2O1)OC)C4=C(C5=C(O4)C=C(C=C5)O)C(=O)O3)(C)C