You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[6-[[2-(3-chlorophenyl)-2-hydroxypropyl]amino]pyridin-3-yl]-(2,3-dihydroindol-1-yl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H22ClN3O2
assistant