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 (2R)-2-[[4-amino-5-(2-fluorophenyl)-1,2,4-triazol-3-yl]sulfanyl]-N-[2-[(2S)-butan-2-yl]phenyl]propanamide .
user
C21H24FN5OS
assistant