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What is the molecular formula of the molecule identified by 6a,9a-dichloro-6-(2-hydroxy-4-methoxyphenyl)-8-methyl-2-(4-nitrophenyl)-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindole-1,3,7,9-tetrone ?
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C28H23Cl2N3O8
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