You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-methoxy-1-methylindol-2-yl)-[(3S)-3-(1H-pyrrolo[3,2-b]pyridin-2-yl)piperidin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H24N4O2
assistant