COc1nccc(N(C)C)n1    mol4182    0_1
COc1nccc([NH+](C)C)n1    mol4182    1_1
COc1nccc(N(C)C)[nH+]1    mol4182    1_2
COc1nc(N(C)C)cc[nH+]1    mol4182    1_3