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system
Name the molecular formula for the molecule established as methyl (1S,2S,4R,6S,7S,10S,11R,14R,15R)-2,6,11,15-tetramethyl-14-[(2S)-6-methylheptan-2-yl]-5-oxo-18-oxapentacyclo[8.7.1.01,10.02,7.011,15]octadecane-4-carboxylate using the IUPAC nomenclature.
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C31H50O4
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