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Name the molecular formula for the molecule established as methyl (2S,3R,4R)-5-hydroxy-2-[(2S,3R,4S,5R,6S)-6-[(2R,3R,4S,5R,6R)-6-hydroxy-4,5-dimethoxy-2-methoxycarbonyloxan-3-yl]oxy-4,5-dimethoxy-2-methoxycarbonyloxan-3-yl]oxy-3,4-dimethoxy-3,4-dihydro-2H-pyran-6-carboxylate using the IUPAC nomenclature.
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C27H42O19
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