Using C=CCN1C(=O)COc2ccc(C3CC(=O)C(C(=O)CC)=C(O)C3)cc21, CCON to produce C=CCN1C(=O)COc2ccc(C3CC(=O)C(C(CC)=NOCC)=C(O)C3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.