IUPAC:2,10-dihydroxy-4,12-dimethyl-7,15-dioxapentacyclo[8.6.1.1^{2,9}.0^{1,13}.0^{5,9}]octadeca-4,12-diene-3,11,17,18-tetrone
IUPAC:2,10-dihydroxy-4,12-dimethyl-7,15-dioxapentacyclo[8.6.1.1^{2,9}.0^{1,13}.0^{5,9}]octadeca-4,12-diene-3,11,17,18-tetrone