['CC(C)(C)N', 'CN(CC=O)C(=O)CN1CCCc2cc(F)ccc21', 'CNCC(=O)NC(C)(C)C', 'O=CCN1CCCc2cc(F)ccc21', 'CC(=O)NC(C)(C)C', 'CNC(=O)CN1CCCc2cc(F)ccc21', 'CC(C)C', 'CN(CC(N)=O)C(=O)CN1CCCc2cc(F)ccc21', 'Fc1ccc2c(c1)CCCN2', 'CC(=O)N(C)CC(=O)NC(C)(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2c(c1)CCCN2.