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