InChI=1/C19H20N4O5/c1-9-13(16(25)28-4)10(2)20-14(9)15(24)21-12-7-5-11(6-8-12)19(3)17(26)22-18(27)23-19/h5-8,20H,1-4H3,(H,21,24)(H2,22,23,26,27)/t19-/m0/s1/f/h21-23H A6FD9EFD66921F9F