You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3E,7Z)-3,7-bis[cyano(isocyano)methylidene]-4,8-bis[3-(difluoromethyl)-5-methylphenyl]-5,6-diisocyano-s-indacene-1,2-dicarbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C38H14F4N8
assistant