IUPAC:(3aR,4S,9aS,9bR)-9-(hydroxymethyl)-6-methyl-3-methylidene-2,7-dioxo-2H,3H,3aH,4H,5H,7H,9aH,9bH-azuleno[4,5-b]furan-4-yl 2-(4-hydroxyphenyl)acetate
IUPAC:(3aR,4S,9aS,9bR)-9-(hydroxymethyl)-6-methyl-3-methylidene-2,7-dioxo-2H,3H,3aH,4H,5H,7H,9aH,9bH-azuleno[4,5-b]furan-4-yl 2-(4-hydroxyphenyl)acetate