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system
Name the molecular formula for the molecule established as 2-[6-[6-[4,5-dihydroxy-2-(hydroxymethyl)-6-(4-nitrophenoxy)oxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol using the IUPAC nomenclature.
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C30H45NO23
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