You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(1S)-2-ethylsulfonyl-1-(hydroxymethyl)-7-methoxy-9-methylspiro[1,3-dihydropyrido[3,4-b]indole-4,3'-azetidine]-1'-yl]-pyridin-3-ylmethanone into its molecular formula.
user
C24H28N4O5S
assistant