Using COc1ccc2nccc(N3CCC(S(=O)(=O)CCNC(=O)OC(C)(C)C)C3)c2n1 to produce COc1ccc2nccc(N3CCC(S(=O)(=O)CCN)C3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.