NNc1cccc(S(=O)(=O)O)c1    mol8883    0_1
N[NH2+]c1cccc(S(=O)(=O)[O-])c1    mol8883    0_2
[NH3+]Nc1cccc(S(=O)(=O)[O-])c1    mol8883    0_3
NNc1cccc(S(=O)(=O)[O-])c1    mol8883    -1_1