NC(=O)c1cc(N)nc(N)n1    mol7254    0_1
NC(=O)c1cc(N)nc(N)[nH+]1    mol7254    1_1
NC(=O)c1cc([NH3+])nc(N)n1    mol7254    1_2
NC(=O)c1cc(N)[nH+]c(N)n1    mol7254    1_3
NC(=O)c1cc(N)nc([NH3+])n1    mol7254    1_4