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What is the molecular formula of the molecule identified by (1'S,2'S,3aS,6'S,6aR,9S,9aR,9bS,10'R,14'S)-14'-hydroxy-14'-(hydroxymethyl)-6,9'-dimethylidene-3,5'-bis[(4-methylpiperazin-1-yl)methyl]spiro[3,3a,4,5,6a,7,9a,9b-octahydroazuleno[4,5-b]furan-9,11'-3-oxatricyclo[8.4.0.02,6]tetradecane]-2,4',8-trione ?
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C39H58N4O7
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