You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(3-methoxyiminopropyl)-3-naphthalen-2-yl-8-thiabicyclo[3.2.1]oct-3-en-6-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H23NO2S
assistant