Using O=S(=O)(c1ccccc1Br)N1CCC(c2cn(S(=O)(=O)c3ccccc3Br)cn2)CC1 to produce O=S(=O)(c1ccccc1Br)N1CCC(c2c[nH]cn2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.