You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-[11-ethyl-2,6-dioxo-5-[[(2S)-oxolan-2-yl]methyl]-1,5,8,12-tetrazatricyclo[7.3.0.03,7]dodeca-3(7),9,11-trien-8-yl]-N-(5-fluoropyridin-2-yl)acetamide ?
user
C22H23FN6O4
assistant