title: Ircinianin, a novel sesterterpene from a marine sponge.
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D011161:Porifera / Q000737:chemistry*; D012623:Seawater; D013729:Terpenes / Q000302:isolation & purification*
chemical_list: D013729:Terpenes; C015299:ircinianin