You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 6-cyclopropyl-2-[[1-(1,2,4-oxadiazol-3-ylmethyl)piperidin-4-yl]methyl]pyridazin-3-one into its molecular formula.
user
C16H21N5O2
assistant