InChI=1S/C15H20O10/c1-22-6-3-8(23-2)7(5-16)9(4-6)24-15-12(19)10(17)11(18)13(25-15)14(20)21/h3-4,10-13,15-19H,5H2,1-2H3,(H,20,21)