O=C(O)c1c[nH]c2ccccc12    mol10946    0_1
O=C(O)c1c[n-]c2ccccc12    mol10946    -1_1
O=C([O-])c1c[nH]c2ccccc12    mol10946    -1_2
O=C([O-])c1c[n-]c2ccccc12    mol10946    -2_1