Using CC(Br)Br, S=c1[nH]c(-c2ccccn2)c(-c2ccccn2)[nH]1 to produce c1ccc(-c2nc3n(c2-c2ccccn2)CCS3)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.