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For the molecule named 1-[(2R,3R,4R,5S)-5-acetyl-6-[2-(3,4-dihydroxyphenyl)ethyl]-3,4,5-trihydroxy-2-(hydroxymethyl)-4-[(3S,4S,5S,6R)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxan-3-yl]-3-(3,4-dihydroxyphenyl)prop-2-en-1-one by IUPAC nomenclature, provide its molecular formula.
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C31H38O15
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