You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3S,5R)-2-[(3S,5S,6S)-6-[(5S,6R)-2-[(2S,4S,5R)-3,5-dihydroxy-2-[(3S,5S,6S)-4-hydroxy-6-[(3S,5S,6S)-4-hydroxy-2-(hydroxymethyl)-5,6-dimethyloxan-3-yl]oxy-2-(hydroxymethyl)-5-methyloxan-3-yl]oxy-6-(hydroxymethyl)oxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-4-hydroxy-2-(hydroxymethyl)-5-methyloxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol is the IUPAC name of a molecule. Please give its molecular formula.
user
C40H70O27
assistant