You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (5Z,6E)-2,2-dimethyl-6-(3-methylbutan-2-ylidene)-5-(3-methylsulfonylbut-3-en-2-ylidene)oxane by IUPAC nomenclature, provide its molecular formula.
user
C17H28O3S
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