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What is the molecular formula of the molecule (2E,4E,6E,8E,10E,12E,14E,16E)-17-[(2S,6S,7aR)-6-hydroxy-4,4,7a-trimethyl-2,5,6,7-tetrahydro-1-benzofuran-2-yl]-1-[(1R,4S)-4-hydroxy-1,2,2-trimethylcyclopentyl]-4,8,12-trimethyloctadeca-2,4,6,8,10,12,14,16-octaen-1-one ?
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C40H56O4
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