InChI=1/C11H16N4O4/c16-3-7(8(18)4-17)12-1-6-2-13-10-9(6)14-5-15-11(10)19/h2,5,7-8,12-13,16-18H,1,3-4H2,(H,14,15,19)/t7-,8+/m0/s1/f/h15H F45DC2FD3A391A20