You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 3-[9-[(E)-(2-ethylidene-1-naphthalen-1-ylindol-3-ylidene)methyl]carbazol-3-yl]-9-pyrimidin-2-ylcarbazole ?
user
C49H33N5
assistant