(c) A volatile plant product M, C8H140, has strong IR absorption at 1717 cm. It possess H NMR signals at 8H 1.65 (3H, s), 2.15 (3H, s), 2.4 (4H, m) and 5.20 (1H, t). On ozonolysis, compound M gives, among other products, propanone, and on treatment with iodine and alkali it gives triiodomethane (iodoform). What structural formula can be obtained from: (ii) Its IR spectrum (1 marks) (iv) Its chemical reactions (2 marks) (i) Its molecular formula (2 marks) (iii) Its 'H NMR spectrum (3 marks) (v) Deduce the structure of compound M (3 marks)