You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (2S,4S,5R,6R)-5-acetamido-2-[(3R,4S,5S,6R)-2-[(2R,3S,4R,5R)-5-acetamido-6-[[(2R,4R,5R,6R)-5-acetamido-3-[(2S,3R,5S,6R)-4-[(2S,4S,5R,6S)-5-acetamido-2-acetyl-4-hydroxy-6-(1,2,3-trihydroxypropyl)oxan-2-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethoxy]-4-hydroxyoxan-2-yl]methoxy]-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-(1,2,3-trihydroxypropyl)oxane-2-carboxylic acid ?
user
C69H99N5O40
assistant