Using COC(=O)c1cccc2[nH]c([C@@]3(C)CCCN3C(=O)OCc3ccccc3)cc12 to produce COC(=O)c1cccc2[nH]c([C@@]3(C)CCCN3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.