You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(2S,6S)-2,6-dimethylpiperidin-1-yl]-2-[1-(3-fluorophenyl)tetrazol-5-yl]sulfanylethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H20FN5OS
assistant