4-hydroxy-6-(4-hydroxy-2-methoxyphenyl)-2-isopropenyl-2,3,6,7-tetrahydro-5H-furo[3,2-g]chromen-5-one 5H-furo[3,2-g][1]benzopyran-5-one, 2,3,6,7-tetrahydro-4-hydroxy-6-(4-hydroxy-2-methoxyphenyl)-2-(1-methylethenyl)- InChI=1/C21H20O6/c1-10(2)15-7-13-17(27-15)8-18-19(20(13)23)21(24)14(9-26-18)12-5-4-11(22)6-16(12)25-3/h4-6,8,14-15,22-23H,1,7,9H2,2-3H