You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule molecular hydrogen;[(3R)-oxolan-3-yl] 5-fluoro-1'-(8-propoxycarbonyl-8-azabicyclo[3.2.1]octan-3-yl)spiro[2H-indole-3,4'-piperidine]-1-carboxylate into molecular formula.
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C28H40FN3O5
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