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 methyl (4R)-5-[[(2R)-1-ethoxy-3-methyl-1-oxobutan-2-yl]carbamoyl]-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylate ?
user
C23H29N3O7
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