InChI=1S/C17H20O10/c1-17(13(27-17)7-3-5-8(24-2)6-4-7)16(23)26-15-11(20)9(18)10(19)12(25-15)14(21)22/h3-6,9-13,15,18-20H,1-2H3,(H,21,22)