Using Nc1ncc(CBr)c(N)n1, Clc1ccc(N2CCNCC2)cc1 to produce Nc1ncc(CN2CCN(c3ccc(Cl)cc3)CC2)c(N)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.