Using COC(=O)CC(=O)OC, CCOc1ncccc1C1(Cl)C(=O)Nc2ccc(Cl)cc21 to produce CCOc1ncccc1C1(C(C(=O)OC)C(=O)OC)C(=O)Nc2ccc(Cl)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.