You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
benzyl N-[(1S,2S)-2-[tert-butyl(dimethyl)silyl]oxy-1-[(2R,3S,4R,5R)-3,4-dihydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]but-3-enyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H39N3O8Si
assistant