Using CCn1c(=O)c(-c2cc(N)c(F)cc2C)cc2cnc(Cl)cc21, NC1CC1 to produce CCn1c(=O)c(-c2cc(N)c(F)cc2C)cc2cnc(NC3CC3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.