Using CCCC(=O)C1C(=O)CC(C2OC(OCC(C)C)CC(CC)C2C)CC1=O, NOCC=CCl to produce CCC1CC(OCC(C)C)OC(C2CC(=O)C(=CCCCNOCC=CCl)C(=O)C2)C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.