Using CC(C)(C)C(=O)Cl, CN1C(=O)CC(=O)N(C)C1=O to produce CN1C(=O)C(C(=O)C(C)(C)C)C(=O)N(C)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.