You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3,5-ditert-butyl-4-hydroxyphenyl)-2-(6-ethoxy-5-fluoro-3-imino-4-methoxy-1H-isoindol-2-yl)ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H35FN2O4
assistant