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Under IUPAC nomenclature, a molecule named N-[2-chloro-5-fluoro-4-(trifluoromethyl)phenyl]-2-[2-(3,6-dihydro-2H-pyran-4-yl)-5-ethyl-6-[4-(3-ethylpyridine-2-carbonyl)piperazin-1-yl]-7-oxo-[1,2,4]triazolo[1,5-a]pyrimidin-4-yl]acetamide is given. What is its corresponding molecular formula?
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C33H33ClF4N8O4
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