You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
diethyl 2-[2-[3-cyano-2-(2,2,2-trifluoroacetyl)-1,3,4,9-tetrahydropyrido[3,4-b]indol-1-yl]ethyl]propanedioate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H24F3N3O5
assistant