Using Clc1ncc(Br)c(Nc2ccccc2)n1, NCc1ccc(N)cc1 to produce NCc1ccc(Nc2ncc(Br)c(Nc3ccccc3)n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.