Using COc1ccc(COC(=O)c2ccc(C(O)C(=O)O)cc2)cc1, O=C(Cl)CCl to produce COc1ccc(COC(=O)c2ccc(C(OC(=O)CCl)C(=O)O)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.