You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(2R)-1-(tert-butylcarbamoylamino)-1-oxopropan-2-yl] 3-methyl-1-(2-methylpropyl)thieno[2,3-c]pyrazole-5-carboxylate into its molecular formula.
user
C19H28N4O4S
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