Using Oc1cccnc1, O=C(CCl)c1cn(-c2cccc(Br)c2)cn1 to produce O=C(COc1cccnc1)c1cn(-c2cccc(Br)c2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.