Nn1nnnc1-c1ccccc1 mol4304 0_1 Nn1[nH+]nnc1-c1ccccc1 mol4304 1_1 Nn1n[nH+]nc1-c1ccccc1 mol4304 1_2 Nn1nn[nH+]c1-c1ccccc1 mol4304 1_3 [NH3+]n1nnnc1-c1ccccc1 mol4304 1_4