You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (E)-7-[(1R,2R,3R,5R)-5-bromo-3-hydroxy-2-[(E)-3-hydroxy-3-methyloct-1-enyl]cyclopentyl]hept-5-enoic acid ?
user
C21H35BrO4
assistant