Using BrCc1ccccc1, Cc1cccc(Nc2c(N)cc(C(=O)O)cc2S(N)(=O)=O)n1 to produce Cc1cccc(Nc2c(NCc3ccccc3)cc(C(=O)O)cc2S(N)(=O)=O)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.