What is the molecular formula of the dissolved s molecules

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The boiling point of pure CS2 is 46.30 oC, and its boiling point elevation constant Kb is 2.34 oC/m. A solution of sulfur in liquid CS2, which was prepared by dissolving 2.26 g S in 50.0 g CS2, boils at 46.71oC. What is the molecular formula of the dissolved S molecules?

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