This is a 2-part study. Part 1 will assess the relative bioavailability of the new 450 mg tablet test formulation compared to the 150 mg capsule reference formulation (3 x 150 mg). Part 1 dosing will be conducted in the fasted state. Part 2 will assess the effect of food (and fat content) on the pharmacokinetics of the 450 mg tablet test formulation.