CCOC(=O)C1=C(COCCN)NC(C)=C(C(=O)OC)[C@H]1c1ccccc1Cl    mol91    0_1
CCOC(=O)C1=C(COCC[NH3+])NC(C)=C(C(=O)OC)[C@H]1c1ccccc1Cl    mol91    1_1
CCOC(=O)C1=C(COCCN)[NH2+]C(C)=C(C(=O)OC)[C@H]1c1ccccc1Cl    mol91    1_2