You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-2-butyl-2-ethyl-3H-[1]benzothiepino[4,5-b]oxirene 4,4-dioxide;(2R)-2-butyl-2-ethyl-3H-[1]benzothiepino[4,5-b]oxirene 4,4-dioxide by IUPAC nomenclature, provide its molecular formula.
user
C32H40O6S2
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