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 N-[(2S)-butan-2-yl]-1-(hydroxymethyl)-5,6,7,9-tetrahydroimidazo[1,5-a][1,4]diazepine-8-carboxamide .
user
C13H22N4O2
assistant