Using COC(=O)C1=C(C)NC(C)=C(C(=O)OC)C1[C@H]1CC[C@@H](C(=O)OC)C1 to produce COC(=O)C1=C(C)NC(C)=C(C(=O)OC)C1[C@H]1CC[C@@H](C(=O)O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.