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What is the molecular formula of the molecule identified by [(3S,5R,8R,9R,10S,12R,13S,14S,17S)-17-[(1R)-1-acetyloxyethyl]-3,14,17-trihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-12-yl] (E)-2-methylbut-2-enoate ?
user
C28H44O7
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