1H-2-benzopyran-1-one, 4-[(acetyloxy)acetyl]-8-hydroxy- 2-(8-hydroxy-1-oxo-1H-isochromen-4-yl)-2-oxoethyl acetate InChI=1/C13H10O6/c1-7(14)18-6-11(16)9-5-19-13(17)12-8(9)3-2-4-10(12)15/h2-5,15H,6H2,1H