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Translate the chemical IUPAC name ethyl (2'R,3'S,5R,10'bS)-1-benzyl-2'-(4-methoxyphenyl)-2,4,6-trioxospiro[1,3-diazinane-5,1'-3,10b-dihydro-2H-pyrrolo[2,1-a]phthalazine]-3'-carboxylate into its molecular formula.
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C31H28N4O6
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