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What is the molecular formula of the molecule identified by 3-[2-[(8R)-6,7-dichloro-3-hydroxy-5,5,8-trimethyl-2-methylidene-1,3,4,4a,6,7,8,8a-octahydronaphthalen-1-yl]-1-hydroxyethyl]pyrrolidine-2,5-dione ?
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C20H29Cl2NO4
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