Using CC(=O)OC[C@@]1(C#N)O[C@@H](n2cc(C)c(=O)[nH]c2=O)C[C@@H]1O to produce Cc1cn([C@H]2C[C@H](O)[C@@](C#N)(CO)O2)c(=O)[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.