Paragraph: A carbonyl compound P , which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q . Ozonolysis of Q leads to a dicarbonyl compound R , which undergoes intramolecular aldol reaction to give predominantly S . P (ii) H ⁺, H ₂ O (i) MeMgBr Q Heat O ₃ / Zn - H ₂ O P (iii) H ₂ SO ₄ /Heat Question: The structures of the products Q and R , respectively, are