You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (3R)-3-(2-chlorophenyl)-1-(3-methoxypropyl)-3-[2-[(3R)-3-(3-methylphenyl)piperidin-1-yl]-2-oxoethyl]pyrrolidine-2,5-dione ?
user
C28H33ClN2O4
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