You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R)-1-oxo-1-[[(1R)-1,2,3,4-tetrahydronaphthalen-1-yl]amino]propan-2-yl] pyridine-4-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H20N2O3
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