Using COC(=O)[C@@H]1C[C@H](N)CN(C(=O)OC(C)(C)C)C1, CC(C)C=O to produce COC(=O)[C@@H]1C[C@H](NCC(C)C)CN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.