You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3R,4R,5R)-3,4-bis[[tert-butyl(dimethyl)silyl]oxy]-5-(6-imidazol-1-ylpurin-9-yl)oxolan-2-yl]methoxy-tert-butyl-dimethylsilane is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H56N6O4Si3
assistant