Using c1ccc2[nH]cnc2c1, BrCCCCN1CCN(c2ncccn2)CC1 to produce c1cnc(N2CCN(CCCCn3cnc4ccccc43)CC2)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.