You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-fluoro-3-[[(3Z)-2-oxo-3-(1H-pyrrol-2-ylmethylidene)-1H-indol-6-yl]amino]phenyl]-3-[3-(trifluoromethoxy)phenyl]urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H19F4N5O3
assistant