Using Cn1cc(N2CCN(C(=O)OC(C)(C)C)CC2=O)c2ccc(OCc3ccccn3)nc21 to produce Cn1cc(N2CCNCC2=O)c2ccc(OCc3ccccn3)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.