Study in Healthy Adults Evaluating PF-07202954. A Phase 1, 3-Part, Sponsor Open Study of PF-07202954 in Healthy Adults: Randomized, Double-Blind, Placebo-Controlled to Assess Safety, Tolerability and Pharmacokinetics of Single (in Part 1), and Repeated (in Part 2), Escalating, Oral Doses Along With Conditional Part 3 of Randomized, Open-Label Assessment of Effect of Food on PF-07202954 Exposure.