You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[4-[(S)-hydroxy-(1-methylimidazol-2-yl)methyl]piperidin-1-yl]-4-piperidin-1-ylbutan-1-one into its molecular formula.
user
C19H32N4O2
assistant