You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3S,4S)-3-fluoro-4-(methylamino)-N-[6-(2-methyl-1,3-oxazol-5-yl)isoquinolin-3-yl]piperidine-1-carboxamide .
user
C20H22FN5O2
assistant