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What is the molecular formula of the compound with this IUPAC name (1R,3S,5R,6S,8R,10S,12R,15S,17S)-6-ethenyl-15-(hydroxymethyl)-8,10,12-trimethyl-2,7,11,16-tetraoxatetracyclo[8.8.0.03,8.012,17]octadecan-5-ol ?
user
C20H32O6
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