Using O=C(c1ccccc1)C(C(=O)c1ccccc1)c1ccccc1, NNc1ccc(Br)cc1 to produce Brc1ccc(-n2nc(-c3ccccc3)c(-c3ccccc3)c2-c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.