InChI=1S/C16H20N2O14/c19-2-4-10(31-15-8(23)6(21)7(22)11(32-15)14(27)28)9(24)12(30-4)18-3(13(25)26)1-5(20)17-16(18)29/h1,4,6-12,15,19,21-24H,2H2,(H,25,26)(H,27,28)(H,17,20,29)