Using Nc1c(Br)ccc(Br)c1N, O=C(C(=O)c1ccccc1)c1ccccc1 to produce Brc1ccc(Br)c2nc(-c3ccccc3)c(-c3ccccc3)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.