You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3S)-1-(3-cyclopentyloxypropyl)-2-(1-methylpyrazol-4-yl)-6-oxopiperidine-3-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H27N3O4
assistant