Using Cc1cncc(-c2cc3c(cn2)cnn3-c2ccc(CO)c(F)n2)n1 to produce Cc1cncc(-c2cc3c(cn2)cnn3-c2ccc(C=O)c(F)n2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.