['Oc1ccccc1', 'Cc1ncc(/C=C/C(=O)O)cn1', 'c1ccccc1', 'O=C(O)/C=C/c1cnc(CO)nc1', 'CC(=O)O', 'Cc1cnc(COc2ccccc2)nc1', 'COc1ccccc1', 'O=C(O)/C=C/c1cncnc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc(OCc2ncccn2)cc1.