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What is the molecular formula of the compound with this IUPAC name (2R,6S)-6-[(5S,7R,10R,13R,14S,15S,17S)-7,15-dihydroxy-4,4,10,13,14-pentamethyl-3,11-dioxo-2,5,6,7,12,15,16,17-octahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methyl-4-oxoheptanoic acid ?
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C30H44O7
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