Using CS(=O)(=O)OCC(COS(C)(=O)=O)(c1cccc(Br)c1)c1cccc(Br)c1, [N-]=[N+]=[N-] to produce CS(=O)(=O)OCC(CN=[N+]=[N-])(c1cccc(Br)c1)c1cccc(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.