You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-1-[4-(3-chlorophenyl)piperazin-1-yl]-3-(2,3-dihydro-1H-inden-5-yloxy)propan-2-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H27ClN2O2
assistant