You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S,4R,5R,6S)-5-acetamido-6-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(E,2S,3R)-3-hydroxy-2-(octadecanoylamino)octadec-4-enoxy]oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3-[(2S,3R,4S,5S,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[[(1S,3R,4R,8S)-8-hydroxy-6-oxo-3-[(1R,2R)-1,2,3-trihydroxypropyl]-2-oxa-5-azabicyclo[2.2.2]octan-1-yl]oxy]oxan-2-yl]oxy-4-hydroxyoxan-2-yl]methyl hydrogen sulfate is the IUPAC name of a molecule. Please give its molecular formula.
user
C71H127N3O32S
assistant