Using O=C(Cl)Cc1ccccc1, CCOC(=O)CCNC(C)(C)c1ccccc1 to produce CCOC(=O)CCN(C(=O)Cc1ccccc1)C(C)(C)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.