InChI=1S/C21H22N4O8/c1-8-7-11(32-21-15(28)13(26)14(27)16(33-21)20(30)31)23-18-12(8)24-19(29)10-3-2-6-22-17(10)25(18)9-4-5-9/h2-3,6-7,9,13-16,21,26-28H,4-5H2,1H3,(H,24,29)(H,30,31)/t13-,14-,15+,16-,21+/m0/s1