InChI=1S/C19H24N4O4/c1-19(2,27)11-16(24)23-17(25)14(10-13-6-4-3-5-7-13)22-18(26)15-12-20-8-9-21-15/h3-9,12,14,16,24,27H,10-11H2,1-2H3,(H,22,26)(H,23,25)/t14-,16+/m0/s1