Using O, CCOC(=O)C(=CN[C@H](CO)c1ccccc1)C(=O)c1c(F)c(F)c(F)c(F)c1F to produce CCOC(=O)c1cn2c3c(c(F)c(F)c(F)c3c1=O)OC[C@@H]2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.