InChI=1S/C14H14N2O8/c15-7(13(21)22)2-4-1-5-6(12(19)20)3-8(14(23)24)16-9(5)11(18)10(4)17/h1,6-8,16H,2-3,15H2,(H,19,20)(H,21,22)(H,23,24)