You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[1-[4-[amino-(4-fluorocyclohepta-1,3,5-trien-1-yl)amino]-3-methylphenyl]-2,2-difluoro-1-hydroxyethyl]-1-prop-2-enylindole-7-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C28H27F3N4O2
assistant