You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(2,3-dimethylphenyl)-4-[4-(1H-pyrrolo[2,3-b]pyridin-3-yl)piperidine-1-carbonyl]benzenesulfonamide by IUPAC nomenclature, provide its molecular formula.
user
C27H28N4O3S
assistant