You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-chloro-3-[2-[4-(2,3-dihydro-1,4-benzodioxin-3-ylmethyl)piperazin-1-yl]ethyl]-1H-indole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26ClN3O2
assistant