You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R,3S,4S,5R)-2,5-bis(hydroxymethyl)oxolane-2,3,4-triol;(2S,3R,4S,5S,6R)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol .
user
C12H24O12
assistant