Using O=C1C=C(Cl)C(=O)C(Cl)=C1, CCOC(=O)C[Zn]Br to produce CCOC(=O)CC1(O)C=C(Cl)C(=O)C(Cl)=C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.