You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(1Z,3E)-4-[4-[4-[(9E)-10-methylidene-9-[2-(9-phenylcarbazol-3-yl)prop-2-enylidene]phenanthren-3-yl]-6-phenyl-1,3,5-triazin-2-yl]phenyl]buta-1,3-dienyl]methanimine by IUPAC nomenclature, provide its molecular formula.
user
C56H39N5
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