InChI=1S/C12H16O13/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/h2,4-8,12,14-17H,1H2,(H,18,19)(H,20,21)(H,22,23)