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What is the molecular formula of the molecule methyl formate;methyl 9-hydroxy-5b,8,11a-trimethyl-1,2,3,4,5,5a,6,7,7a,8,9,10,11,11b,12,13,13a,13b-octadecahydrocyclopenta[a]chrysene-3a-carboxylate ?
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C28H46O5
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