You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-phenyl-3-(5-piperidin-1-ylsulfonyl-2,3-dihydroindole-1-carbonyl)piperidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H32N4O4S
assistant