Using CC(C)(C)OC(=O)Nc1cc(Cl)nc(Cl)c1N, C[C@H]1CC[C@H](C=O)CC1 to produce CC(C)(C)OC(=O)Nc1cc(Cl)nc(Cl)c1NC[C@H]1CC[C@H](C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.