You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(hexoxycarbothioylamino)oxan-2-yl]methyl acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H33NO10S
assistant