InChI=1/C16H16N4O4/c1-10(21)18-12-4-6-13(7-5-12)19-16(22)11-3-8-14(17-2)15(9-11)20(23)24/h3-9,17H,1-2H3,(H,18,21)(H,19,22)/f/h18-19H 07EF3F47A3BCA7C2