['C/C=C/C', '[NH3+]Cc1ccc(C(=O)[O-])cc1', 'C/C=C/C[NH3+]', 'Cc1ccc(C(=O)[O-])cc1', 'O=C[O-]', 'C/C=C/C[NH2+]Cc1ccccc1', 'CC', 'CC[NH2+]Cc1ccc(C(=O)[O-])cc1', 'C/C=C/C[NH2+]C', 'O=C([O-])c1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.