You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3aR,4S,5R,6aS)-5-[tert-butyl(dimethyl)silyl]oxy-4-[(E,3S,5R)-3-[tert-butyl(dimethyl)silyl]oxy-5,7-dimethyloct-1-enyl]-2-methylidene-3,3a,4,5,6,6a-hexahydro-1H-pentalen-1-ol by IUPAC nomenclature, provide its molecular formula.
user
C31H60O3Si2
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