You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3-[(6aR,9S)-5,7-dimethyl-2-methylsulfanyl-6,6a,8,9,10,10a-hexahydro-4H-indolo[4,3-fg]quinolin-9-yl]-1,1-diethylurea into molecular formula.
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C22H32N4OS
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