4. Provide the information requested in the statements below: a) Find and draw all C's that do not contain H's (if any). For this, redraw the structure where you show the d ('s). N b) Find and draw all CH's (if any). For this, redraw the structure where you show the CH ('s). CH OH HO IN CH3 673 CH an antihypertensive drug c) Find and draw all CH2's (if any). For this, redraw the structure where you show the CH2 ('s). d) Find and draw all CH3's (if any). For this, redraw the structure where you show the CH3 ('s). HO + choline e) Provide the chemical formula of the compound below: