Gypmacrophin A, a Rare Pentacyclic Sesterterpenoid, Together with Three Depsides, Functioned as New Chemical Evidence for Gypsoplaca macrophylla (Zahlbr.) Timdal Identification. - Zhou YF; Shi HX; Hu K; Tang JW; Li XR; Du X; Sun HD; Wang LS; Pu JX (Molecules (Basel, Switzerland), 2017)