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What is the molecular formula of the molecule (2S,3S,4S,5R,6R)-6-[(2R,3S,4R,5R,6R)-6-(2-aminoethoxy)-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2-carboxylic acid ?
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C20H35NO17
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