['N#CCCN', 'CCCN(CC=O)C[C@H]1COc2ccccc2O1', 'CCC', 'N#CCCNC(=O)CNC[C@H]1COc2ccccc2O1', 'CC(=O)NCCC#N', 'CCCNC[C@H]1COc2ccccc2O1', 'CCC#N', 'CCCN(CC(N)=O)C[C@H]1COc2ccccc2O1', 'C[C@H]1COc2ccccc2O1', 'CCCNCC(=O)NCCC#N', 'c1ccc2c(c1)OCCO2', 'CCCN(C)CC(=O)NCCC#N']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2c(c1)OCCO2.