Using O=C(CBr)CC(=O)OCCC(c1ccccc1)c1ccccc1, OCCCl to produce O=C(COCCCl)CC(=O)OCCC(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.