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Name the molecular formula for the molecule established as (2R)-2-(3,4-dichlorophenyl)-N-[(2R)-1-[2-(dimethylamino)ethylamino]-1-oxo-3-phenylpropan-2-yl]-5-(6-fluoro-1-methyl-2-oxospiro[3,1-benzoxazine-4,4'-piperidine]-1'-yl)-2-methylpentanamide using the IUPAC nomenclature.
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C38H46Cl2FN5O4
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