Using Cc1nc(C=Cc2nc3ccc(F)cc3c(=O)n2-c2cccnc2C)cs1 to produce Cc1nc(CCc2nc3ccc(F)cc3c(=O)n2-c2cccnc2C)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.