InChI=1S/C19H26O9/c1-10(12-6-4-3-5-7-12)8-26-18(25)11(2)9-27-19-15(22)13(20)14(21)16(28-19)17(23)24/h3-7,10-11,13-16,19-22H,8-9H2,1-2H3,(H,23,24)