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