You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (Z)-3-[1-[(2-chloro-4-fluorophenyl)methyl]indol-3-yl]-2-naphthalen-1-ylprop-2-enenitrile into its molecular formula.
user
C28H18ClFN2
assistant