You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-[5-(4-benzylpiperazin-1-yl)sulfonylpyridin-2-yl]-2-oxo-1,3-dihydroindole-5-carbonitrile ?
user
C25H23N5O3S
assistant