['CC(C)(C)N', 'Cc1nn(CCO)c(C)c1CNCC=O', 'CC(C)(C)NC(=O)CN', 'Cc1nn(CCO)c(C)c1C', 'CC(=O)NC(C)(C)C', 'Cc1nn(CCO)c(C)c1CN', 'CC(C)C', 'Cc1nn(CCO)c(C)c1CNCC(N)=O', 'CCO', 'Cc1n[nH]c(C)c1CNCC(=O)NC(C)(C)C', 'CNCC(=O)NC(C)(C)C', 'Cc1cc(C)n(CCO)n1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1cn[nH]c1.