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