Using COc1ccc(C)cc1S(=O)(=O)Nc1cc(C(=O)N2CCN(C(=O)OC(C)(C)C)CC2)c2occc2c1 to produce COc1ccc(C)cc1S(=O)(=O)Nc1cc(C(=O)N2CCNCC2)c2occc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.