You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-(4-ethylphenyl)-3-[(1R,5S)-9-(thiophen-2-ylmethyl)-9-azabicyclo[3.3.1]nonan-3-yl]thiourea into molecular formula.
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C22H29N3S2
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