You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S,4S,5R,6S)-2-(azidomethyl)-6-phenylsulfanyl-3,5-bis(trimethylsilyloxy)oxan-4-yl]oxy-trimethylsilane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H39N3O4SSi3
assistant