Using COC(=O)Cn1ccc2cc(N(C(=O)OC(C)(C)C)S(C)(=O)=O)ccc21 to produce CC(C)(C)OC(=O)N(c1ccc2c(ccn2CC(=O)O)c1)S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.