You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 7-[(2R,4R)-4-(8-ethoxyoct-1-enyl)-2,4-dihydroxycyclopentyl]hept-5-enoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H40O5
assistant