Using CCOC=O, Cc1ccc(C(=Cc2nnnn2C)c2ccc(C)cc2F)c(F)c1 to produce Cc1ccc(C(=C(C=O)c2nnnn2C)c2ccc(C)cc2F)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.