You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3R)-3-cyclopentyl-2-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]hex-5-enoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H28O4
assistant