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What is the molecular formula of the molecule [(5S,8R,9S,10S,13S,14S,17R)-10,13-dimethyl-3-trimethylsilyloxy-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl] (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate ?
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C42H68O3Si
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