An organic compound P 𝑃 with molecular formula C 9 H 18 O 2 𝐶 9 𝐻 18 𝑂 2 decolorizes bromine water and also shows positive iodoform test. P 𝑃 on ozonolysis followed by treatment with H 2 O 2 𝐻 2 𝑂 2 gives Q 𝑄 and R 𝑅 . While compound Q 𝑄 shows positive iodoform test, compound R 𝑅 does not give positive iodoform test. Q 𝑄 and R 𝑅 on oxidation with pyridinium chlorochromate ( P C C 𝑃 𝐶 𝐶 ) followed by heating give S 𝑆 and T 𝑇 , respectively. Both S 𝑆 and T 𝑇 show positive iodoform test. Complete copolymerization of 500 moles of Q 𝑄 and 500 moles of R 𝑅 gives one mole of a single acyclic copolymer U 𝑈 . [Given, atomic mass: H = 1 , C = 12 , O = 16 𝐻 = 1 , 𝐶 = 12 , 𝑂 = 16 ] (1) Sum of number of oxygen atoms in S 𝑆 and T 𝑇 is _____. (2) The molecular weight of U 𝑈 is _____.