Using C=CCO[C@@H]1O[C@@H](C)[C@H](OCc2ccccc2)[C@@H](OCc2ccccc2)[C@H]1OC(=O)CCC(C)=O to produce CC(=O)CCC(=O)O[C@@H]1[C@H](OCc2ccccc2)[C@@H](OCc2ccccc2)[C@H](C)O[C@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.