Using CCCNc1nc(Cl)ncc1C#CCCCNC(=O)[C@H](C)N(C)C(=O)OC(C)(C)C to produce CCCNc1nc(Cl)ncc1C#CCCCNC(=O)[C@H](C)NC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.