Using CCOC(=O)Cc1ccc(OCc2ccccc2)cc1, CCOC(=O)OCC to produce CCOC(=O)C(C(=O)OCC)c1ccc(OCc2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.