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