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What is the molecular formula of the molecule (3S,3aS,9aR,9bR)-3a-methyl-6-[2-(2-methyl-1,3-dioxolan-2-yl)ethyl]-3-[(2S)-6-methylheptan-2-yl]-2,3,4,5,8,9,9a,9b-octahydro-1H-cyclopenta[a]naphthalen-7-one ?
user
C28H46O3
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