Using CC1(C)OC(=O)CC(=O)O1, CCC[C@H](Nc1ccc(C#N)c(Cl)c1)C(=O)O to produce CCCC1C(O)=CC(=O)N1c1ccc(C#N)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.