Using CCOC(=O)OCC, CCOC(=O)Cc1ccc(-c2sccc2C)cc1 to produce CCOC(=O)C(C(=O)OCC)c1ccc(-c2sccc2C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.