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-[[2-(2-cyclobutyl-4-methyl-1,3-thiazol-5-yl)acetyl]amino]-2-(2-methylpyrazol-3-yl)acetic acid .
user
C16H20N4O3S
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