You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-(5-fluoro-1H-indol-3-yl)-N-[2-(5,6,7,8-tetrahydronaphthalen-1-yloxy)ethyl]propan-1-amine by IUPAC nomenclature, provide its molecular formula.
user
C23H27FN2O
assistant