Using O=CNc1cc(F)ccc1C(=O)C1CCN(CCn2c(=O)[nH]c3ccccc3c2=O)CC1 to produce Nc1cc(F)ccc1C(=O)C1CCN(CCn2c(=O)[nH]c3ccccc3c2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.