InChI=1S/C18H22O10/c1-4-5-9-6-11(25-3)12(26-8(2)19)7-10(9)27-18-15(22)13(20)14(21)16(28-18)17(23)24/h4-7,13-16,18,20-22H,1-3H3,(H,23,24)/b5-4-