InChI=1S/C12H14O13/c13-3(14)1-2(4(15)9(19)20)11(23)25-12-7(18)5(16)6(17)8(24-12)10(21)22/h1,4-8,12,15-18H,(H,13,14)(H,19,20)(H,21,22)/b2-1-