You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[2-[4-(dicyanomethylidene)cyclohexa-2,5-dien-1-ylidene]-2-(4-iodophenyl)-1-phenylethylidene]propanedinitrile ?
user
C26H13IN4
assistant