You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,4S,5R,6R)-5-acetamido-2-[[(2R,3S,4R,5R)-5-acetamido-4,6-dihydroxy-3-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H42N2O19
assistant