An unknown compound with empirical formula C3H5 was treated…

An unknown compound with empirical formula C3H5 was treated with Br2/CCl4. The bromine solution went from orangish/red to clear immediately at room temperature indicating unsaturation in the molecul. Upon treatment with O3 followed by work-up with dimethylsulfide the following products were identified. From the information provided what is the most likely structure for this unknown compound.