You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3-(1-methyl-3,6-dihydro-2H-pyridin-4-yl)-6-nitroindol-1-yl]-tri(propan-2-yl)silane is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H35N3O2Si
assistant