You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2R,4S,5R,6R)-2-[[(2R,3R,4R,5R,6S)-5-acetamido-3,6-dihydroxy-4-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]-4-hydroxy-5-[(2-hydroxyacetyl)amino]-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid into molecular formula.
user
C25H42N2O20
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