Using COCC1(C)CCOc2ccc(C#Cc3ccc(C(=O)OC)cc3)cc21 to produce COCC1(C)CCOc2ccc(C#Cc3ccc(C(=O)O)cc3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.