Paragraph I: An organic compound (P) with molecular formula (C_9 H_...

Paragraph I: An organic compound (\mathbf{P}) with molecular formula (\mathrm{C}_9 \mathrm{H}_{18} \mathrm{O}_2) decolorizes bromine water and also shows positive iodoform test. (\mathbf{P}) on ozonolysis followed by treatment with (\mathrm{H}_2 \mathrm{O}_2) gives (\mathbf{Q}) and (\mathbf{R}). While compound (\mathbf{Q}) shows positive iodoform test, compound (\mathbf{R}) does not give positive iodoform test. (\mathbf{Q}) and (\mathbf{R}) on oxidation with pyridinium chlorochromate (PCC) followed by heating give (\mathbf{S}) and (\mathbf{T}), respectively. Both (\mathbf{S}) and (\mathbf{T}) show positive iodoform test. Complete copolymerization of 500 moles of (\mathbf{Q}) and 500 moles of (\mathbf{R}) gives one mole of a single acyclic copolymer (\mathbf{U}). [Given, atomic mass: (\mathrm{H}=1, \mathrm{C}=12, \mathrm{O}=16)] Question: Sum of number of oxygen atoms in $\mathbf{S}$ and $\mathbf{T}$ is