Oc1cccc2c1NCCC2 mol4467 0_1 [O-]c1cccc2c1[NH2+]CCC2 mol4467 0_2 Oc1cccc2c1[NH2+]CCC2 mol4467 1_1 [O-]c1cccc2c1NCCC2 mol4467 -1_1