Cc1cc(-c2ccccn2)nn1C mol13821 0_1 Cc1cc(-c2ccccn2)[nH+]n1C mol13821 1_1 Cc1cc(-c2cccc[nH+]2)nn1C mol13821 1_2 Cc1cc(-c2cccc[nH+]2)[nH+]n1C mol13821 2_1