Using C#Cc1c(C)c(C#Cc2ccc(CC(=O)OC)cc2)cc(C(C)(C)C)c1OC(C)C to produce C#Cc1c(C)c(C#Cc2ccc(CC(=O)O)cc2)cc(C(C)(C)C)c1OC(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.