Using O=CC1=C[C@H]2CC(O)O[C@H]2C1, O=C(Cl)c1ccccc1 to produce O=CC1=C[C@H]2CC(OC(=O)c3ccccc3)O[C@H]2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.