You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-(4-tert-butylpyridin-2-yl)-2-[3-(3,5-dimethyl-4-phenylpyrazol-1-yl)-5-methylphenoxy]carbazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C39H36N4O
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