You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-[(2R,4S)-2-(2,5-difluorophenyl)-4-fluoropyrrolidin-1-yl]-3-(nitromethyl)pyridine-2-carboxamide into molecular formula.
user
C17H15F3N4O3
assistant