You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-(aminomethylidene)-N'-[(2S)-2-(2,4-difluorophenyl)-3-pyrimidin-4-ylbutyl]methanimidamide using the IUPAC nomenclature.
user
C16H17F2N5
assistant