You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 5-[(1-cyclopentylpiperidin-4-yl)methyl-[[(2S)-oxolan-2-yl]methyl]amino]-5-oxopentanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H38N2O4
assistant