InChI=1S/C18H24O8/c1-8-4-6-11(7-5-8)9(2)15(10(3)19)25-18-14(22)12(20)13(21)16(26-18)17(23)24/h4-7,9,12-16,18,20-22H,1-3H3,(H,23,24)