Using CC(C)(C)OC(=O)N1CCN(S(=O)(=O)c2ccc3cc(Br)ccc3c2)CC1 to produce O=S(=O)(c1ccc2cc(Br)ccc2c1)N1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.