You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3R,5S)-N-(6-methylpyridazin-3-yl)-9-propylsulfonyl-1-oxa-9-azaspiro[4.5]decan-3-amine is given. What is its corresponding molecular formula?
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C16H26N4O3S
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