You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (4R,5R)-4-hydroxy-3,3-dimethyl-1-(4,4,4-trichloro-3-methylbutanoyl)-5-(3,3,3-trichloro-2-methylpropyl)pyrrolidin-2-one .
user
C15H21Cl6NO3
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