COc1ncnc2c1N=C(N)C(C)(C)S2 mol34879 0_1 COc1[nH+]cnc2c1N=C(N)C(C)(C)S2 mol34879 1_1 COc1ncnc2c1[NH+]=C(N)C(C)(C)S2 mol34879 1_2 COc1nc[nH+]c2c1N=C(N)C(C)(C)S2 mol34879 1_3