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What is the molecular formula of the molecule methyl (E,6R)-6-[(17S)-3-hydroxy-4,4,10,13,17-pentamethyl-2,3,5,6,9,11,12,16-octahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methyl-4-oxohept-2-enoate ?
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C31H46O4
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