When trans-3-hexene is subjected to ozonolysis in the presence of an excess of acetaldehyde containing the isotope ¹⁸O, an ozonide is isolated that contains the isotope at one of the oxygens. Use the mechanism of ozonolysis to postulate a structure for the ozonide, including the position of the isotope.

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trans-3-hexene Figure P5.52 +03+H3C-CH=0* acetaldehyde-¹80 (*0 = 180) an ozonide