InChI=1/C19H20N4O4/c1-9-14(11(3)24)10(2)20-15(9)16(25)21-13-7-5-6-12(8-13)19(4)17(26)22-18(27)23-19/h5-8,20H,1-4H3,(H,21,25)(H2,22,23,26,27)/t19-/m1/s1/f/h21-23H 7CED757BBF6B1AE7