InChI=1S/C18H22O10/c1-3-26-12(19)7-5-9-4-6-10(25-2)8-11(9)27-18-15(22)13(20)14(21)16(28-18)17(23)24/h4-8,13-16,18,20-22H,3H2,1-2H3,(H,23,24)/b7-5+