You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(4-cyano-1-propan-2-ylpyrazol-3-yl)-3-[(2S)-2-hydroxy-2-thiophen-2-ylpropyl]urea into its molecular formula.
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C15H19N5O2S
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