A Phase 2, Three-arm, Multicenter, Randomized, Double-blind, Placebo-controlled Clinical Trial to Assess the Efficacy, Safety, and Tolerability of a Repeat Dose of Fasedienol (PH94B) Nasal Spray for the Acute Treatment of Anxiety Induced by a Public Speaking Challenge in Adult Subjects With Social Anxiety Disorder, With an Open-Label Extension | Arctuva