OCCCNc1c2ccccc2nc2c1oc1ccccc12 mol16592 0_1 OCCCNc1c2ccccc2[nH+]c2c1oc1ccccc12 mol16592 1_1 OCCC[NH2+]c1c2ccccc2nc2c1oc1ccccc12 mol16592 1_2