InChI=1S/C18H20O12/c1-18(2)4-6(20)8-7(30-18)3-5(19)9(15(24)25)13(8)28-17-12(23)10(21)11(22)14(29-17)16(26)27/h3,10-12,14,17,19,21-23H,4H2,1-2H3,(H,24,25)(H,26,27)