Using CC(=O)OC(C)=O, CNC(=O)O[C@@H]1OC=C(C(=O)OC)[C@H]2C[C@@H]3O[C@@]3(CO)[C@H]12 to produce COC(=O)C1=CCOC=C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.