You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-[(3-methyl-6-propan-2-yl-[1,2]oxazolo[5,4-b]pyridine-4-carbonyl)amino]-3-phenylpropanoic acid .
user
C20H21N3O4
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