4-hydroxy-9-methoxy-7-methyl-5H-furo[3,2-g]chromen-5-one 5H-furo[3,2-g][1]benzopyran-5-one, 4-hydroxy-9-methoxy-7-methyl- InChI=1/C13H10O5/c1-6-5-8(14)9-10(15)7-3-4-17-11(7)13(16-2)12(9)18-6/h3-5,15H,1-2H