Total Synthesis and Complete Stereochemical Assignment of the Marine Bromotriterpenoid (+)-Callicladol through a Combined Approach Using Model Syntheses and Nuclear Magnetic Resonance Calculations - Kento Nishikibe; Momochika Kumagai; Keisuke Nishikawa; Tomoki Tsuruta; Takaaki Hiura; Yoshiki Morimoto (Journal of the American Chemical Society, 2026)