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system
Name the molecular formula for the molecule established as 2-[4-[5-[(5-acetyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-2-yl)amino]-1-methyl-6-oxopyridin-3-yl]-3-(hydroxymethyl)pyridin-2-yl]-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1-one using the IUPAC nomenclature.
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C31H34N8O4
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