Using [N-]=[N+]=[N-], NS(=O)(=O)c1cc2c(cc1Cl)NCN(CCBr)S2(=O)=O to produce NCCN1CNc2cc(Cl)c(S(N)(=O)=O)cc2S1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.