You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance methyl 2-[[8-(3-methoxyphenyl)sulfonyl-2,8-diazaspiro[4.5]decane-2-carbothioyl]amino]-3-methylbutanoate .
user
C22H33N3O5S2
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