You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3R)-1-[(3S)-3-(5-methyl-1,2,4-oxadiazol-3-yl)piperidin-1-yl]-3-pyrrol-1-ylbutan-1-one .
user
C16H22N4O2
assistant