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For the molecule named N-benzyl-2-[(2'R,3R,3'S,4'R)-5-bromo-3'-[(4-methoxyphenyl)-dimethylsilyl]-4'-methyl-2-oxo-1-[[3-(2-oxo-1,3-oxazolidin-3-yl)phenyl]methyl]spiro[indole-3,5'-oxolane]-2'-yl]-N-(2-hydroxyethyl)acetamide by IUPAC nomenclature, provide its molecular formula.
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C42H46BrN3O7Si
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