['CCO', 'O=CCCCNC(=O)COC(=O)/C=C/c1ccc(-c2ccccc2)s1', 'CCOC(=O)CCCNC(=O)CO', 'O=C/C=C/c1ccc(-c2ccccc2)s1', 'CCOC(=O)CCCN', 'O=CCOC(=O)/C=C/c1ccc(-c2ccccc2)s1', 'CC', 'O=C(O)CCCNC(=O)COC(=O)/C=C/c1ccc(-c2ccccc2)s1', 'CCOC(=O)CCCNC(C)=O', 'O=C(O)/C=C/c1ccc(-c2ccccc2)s1', 'CCCC(=O)OCC', 'NC(=O)COC(=O)/C=C/c1ccc(-c2ccccc2)s1', 'Cc1ccc(-c2ccccc2)s1', 'CCOC(=O)CCCNC(=O)COC(C)=O', 'c1ccccc1', 'CCOC(=O)CCCNC(=O)COC(=O)/C=C/c1cccs1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(-c2cccs2)cc1.