You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-1-[[(1S,2R)-2-methylcyclohexyl]amino]-1-oxopropan-2-yl] 2-(3,4-dimethylphenyl)acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H29NO3
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