InChI=1S/C18H30O8/c1-2-3-4-5-6-7-8-9-10-11-12(19)25-18-15(22)13(20)14(21)16(26-18)17(23)24/h7-8,13-16,18,20-22H,2-6,9-11H2,1H3,(H,23,24)/b8-7-