You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[5-(2-fluorophenyl)-4-methyl-1,2,4-triazol-3-yl]sulfanyl]-N-[(1S)-3-methyl-1-phenylbutyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H25FN4OS
assistant