Using CCN1C(=O)C(C)(C)C(=O)N(C)c2cc(CCNC(=O)OC(C)(C)C)ccc21 to produce CCN1C(=O)C(C)(C)C(=O)N(C)c2cc(CCN)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.