3',6'-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; 3',6'-Fluorandiol; 3,6-Dihydroxyspiro[xanthene-9,3'-phthalide]
3',6'-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; 3',6'-Fluorandiol; 3,6-Dihydroxyspiro[xanthene-9,3'-phthalide]