InChI=1S/C18H20O12/c1-18(5-19)4-8(20)6-2-7(15(24)25)9(3-10(6)30-18)28-17-13(23)11(21)12(22)14(29-17)16(26)27/h2-3,11-14,17,19,21-23H,4-5H2,1H3,(H,24,25)(H,26,27)