You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 7-[2-[(E,3S)-3-hydroxy-4-[3-(methoxymethyl)phenyl]but-1-enyl]-5-sulfanylidenepyrrolidin-1-yl]heptanoic acid into its molecular formula.
user
C23H33NO4S
assistant