Using O=C(O)C(c1ccccc1)c1ccccc1, CC(C)=CC[C@@H](O)C1=CC(=O)c2c(O)ccc(O)c2C1=O to produce CC(C)=CCC(OC(=O)C(c1ccccc1)c1ccccc1)C1=CC(=O)c2c(O)ccc(O)c2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.