You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (Z)-7-[(1R,2R,3S,4S)-3-(prop-2-enylsulfanylmethyl)-7-oxabicyclo[2.2.1]heptan-2-yl]hept-5-enoic acid by IUPAC nomenclature, provide its molecular formula.
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C17H26O3S
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