['CC(C)NC(C)C', 'N=C(N)Sc1cn(CC=O)c2ccccc12', 'CCC', 'CC(C)NC(=O)Cn1cc(SC(=N)N)c2ccccc21', 'CC(=O)N(C(C)C)C(C)C', 'N=C(N)Sc1c[nH]c2ccccc12', 'N=C(N)S', 'CC(C)N(C(=O)Cn1ccc2ccccc21)C(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2[nH]ccc2c1.