You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(3R,4R,5R,6R)-2-amino-2,3-dihydroxy-6-(hydroxymethyl)-5-sulfooxyoxan-4-yl] 9-phenylnonanoate into its molecular formula.
user
C21H33NO10S
assistant