O=c1cnc2[nH]cnc(=O)c2[nH]1    mol9620    0_1
O=c1c[nH+]c2[nH]cnc(=O)c2[nH]1    mol9620    1_1
O=c1cnc2[nH]c[nH+]c(=O)c2[nH]1    mol9620    1_2
O=c1cnc2[nH]cnc(=O)c2[n-]1    mol9620    -1_1
O=c1cnc2[n-]cnc(=O)c2[nH]1    mol9620    -1_2