You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3S,4R,5R,6R)-2-[(1S)-1-hydroxy-2-methylpropyl]-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H38O6
assistant