Using O=C1CC(=O)CC(c2c(Cl)cccc2Cl)C1, CC(=O)CCl to produce Cc1coc2c1C(=O)CC(c1c(Cl)cccc1Cl)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.