Using NCCn1ccc2ccccc2c1=O, CCN1C(=O)C(C)(C)C(=O)N(C)c2cc(C=O)ccc21 to produce CCN1C(=O)C(C)(C)C(=O)N(C)c2cc(CNCCn3ccc4ccccc4c3=O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.