Using Oc1cc2ccc(Br)nc2cn1, COC(=O)c1cccc(CBr)c1 to produce COC(=O)c1cccc(Cn2cc3nc(Br)ccc3cc2=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.