Using CO[C@H](C)[C@H](NC(=O)OC(C)(C)C)C(=O)O, CCN(C(C)C)C(C)C to produce CO[C@H](C)[C@H](NC(=O)OC(C)(C)C)C(=O)N1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.