Using O=C(c1ccc[nH]1)C(Cl)(Cl)Cl, COCCC(=O)Cl to produce COCCC(=O)c1c[nH]c(C(=O)C(Cl)(Cl)Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.