Using Brc1cnc(I)cn1, Cc1nc(Br)sc1C(=O)NCc1ccccc1 to produce Cc1nc(-c2cnc(Br)cn2)sc1C(=O)NCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.