I need 1 answered please

1. (a) Ventolin is a top-selling drug used to treat asthma. Assign the non-aromatic protons by filling out the table below: H . H EH HFH.C Hint: assume no couplings to N-H OH OH HA CH, N GHH CH 8 Assignment Multiplicity 1.22 (9H) (a) (b) 2.90 (1H) (c) (d) 3.15 (1H) (e) 0 4.61 (2H) (9) (h) 4.87 (1H) (0) 0 (b) Three signals appear in the aromatic region: 8 6.87 (d). 7.08 (d), 7.14 (s). Using a resonance structure, assign and rationalize the most upfield aromatic signal. (c) Identify the benzylic proton(s). (d) Identify two sets of proton signals that experience roofing and sketch how the patterns would appear on the NMR spectrum. (e) We find 4 additional singlets in the NMR spectrum: 0 3.05, 3.55, 5.65, 9.68. What could they be and how could we confirm this? Briefly Explain. (1) How many carbon signals are expected in the 13C NMR spectrum? (g) Key data from the IR spectrum are tabulated. What vibrational modes do these represent? Assignment 3300-3100 (broad, strong) 0 3288 (sharp, medium) (1) 3044, 3013, 2988 (iii) (sharp, medium) 2938, 2901 (iv) (sharp, medium) N