You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (5R)-5-[3-[6-[2-chloro-3-[2-chloro-3-[4-[2-[[(1R)-3-oxocyclopentyl]methylamino]ethoxy]phenyl]phenyl]phenyl]-2-methoxypyridin-3-yl]propyl]pyrrolidin-2-one by IUPAC nomenclature, provide its molecular formula.
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C39H41Cl2N3O4
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