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What is the molecular formula of the compound with this IUPAC name N-[(4E,8E)-1-[5-[3,4-dihydroxy-6-(hydroxymethyl)-5-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-hydroxytricosa-4,8-dien-2-yl]nonanamide ?
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C50H91NO18
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