You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named methyl (2R)-3-[tert-butyl(diphenyl)silyl]oxy-2-[(2R,3R,4S,5R,6R)-6-(hydroxymethyl)-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxypropanoate by IUPAC nomenclature, provide its molecular formula.
user
C47H54O9Si
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