Using COc1cc(NC(C)C)ccc1CN1C(=O)C(C)(c2ccccc2Cl)c2cc(Cl)ccc21, C=O to produce COc1cc(N(C)C(C)C)ccc1CN1C(=O)C(C)(c2ccccc2Cl)c2cc(Cl)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.