You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 3-(benzimidazol-1-yl)-N-[(2R,3S)-2-(1,5-dimethylpyrazol-4-yl)oxolan-3-yl]propanamide ?
user
C19H23N5O2
assistant