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 [(2R)-1-[[(1S,2R,3R)-2,3-dimethylcyclohexyl]amino]-1-oxopropan-2-yl] 4,5-dimethoxy-2-nitrobenzoate .
user
C20H28N2O7
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