You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 6-fluoro-7-methoxy-4-(2-methylsulfanyl-2,8-diazaspiro[4.5]decan-8-yl)quinoline-3-carbonitrile is given. What is its corresponding molecular formula?
user
C20H23FN4OS
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