Using CC(C)(C)OC(=O)C(C)(C)n1cc(Nc2nccc(N3CC[C@@](C#N)(C4CC4)C3=O)n2)cn1 to produce CC(C)(C(=O)O)n1cc(Nc2nccc(N3CC[C@@](C#N)(C4CC4)C3=O)n2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.