You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S,4S,5R,6S)-3-acetyloxy-5-benzoyloxy-6-[(2R,3S,4R,5R,6S)-4-benzoyloxy-5-(1,3-dioxoisoindol-2-yl)-6-[(2S,3R,4S,5S,6R)-2-[(2R,3R,4S,5R,6R)-6-methoxy-4,5-bis(phenylmethoxy)-2-(phenylmethoxymethyl)oxan-3-yl]oxy-3,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-4-yl]oxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-4-[(2R,3R,4S,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxyoxan-2-yl]methyl benzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C139H137NO31
assistant