['Cc1ccccc1N', 'N#C/C(C=O)=C/C=C/c1ccco1', 'Cc1ccccc1', 'N#C/C(=C/C=C/c1ccco1)C(N)=O', 'C/C=C/c1ccco1', 'Cc1ccccc1NC(=O)CC#N', 'Cc1ccco1', 'C/C=C(/C#N)C(=O)Nc1ccccc1C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=C(/C=C\C=C\c1ccco1)Nc1ccccc1.