Using CCOC(=O)CBr, Cc1c(S(N)(=O)=O)cc(-c2cc(C(C)(C)C)cc(C(C)(C)C)c2)n1CC1CCCCC1 to produce CCOC(=O)CNS(=O)(=O)c1cc(-c2cc(C(C)(C)C)cc(C(C)(C)C)c2)n(CC2CCCCC2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.