IUPAC:(3R)-5,7-dihydroxy-2,4-dihydro-9',11'-dioxaspiro[1-benzopyran-3,4'-tricyclo[6.3.0.0^{3,6}]undecane]-1'(8'),2',6'-trien-4-one
IUPAC:(3R)-5,7-dihydroxy-2,4-dihydro-9',11'-dioxaspiro[1-benzopyran-3,4'-tricyclo[6.3.0.0^{3,6}]undecane]-1'(8'),2',6'-trien-4-one