Choose any of the clinically used drugs and suggest three different functional group modifications that will alter the physical proprieties of these compounds. Describe and compare the physical proprieties for the original molecule and the new one and why did you suggest this specific modification on the functional group. For example, you can describe the effect of this change on water solubility, volatility, hydrogen bonding capability, acidity and basicity, hydrophilicity and hydrophobicity and so on​