['CO', 'CCNC(=S)NCc1cc(C)on1', 'CCOC', 'Cc1cc(CNC(N)=S)no1', 'Cc1cc(C)on1', 'COCCNC(N)=S', 'Cc1ccno1', 'CNC(=S)NCCOC']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cnoc1.