You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (6S)-6-methyl-7-methylsulfonylspiro[2,3,6,8-tetrahydro-[1,4]dioxino[2,3-g]isoquinoline-9,1'-cyclopentane] ?
user
C17H23NO4S
assistant