Synonyms: 1H-2-Benzopyran-1-one,3,4-dihydro-4-[8-(4-hydroxy-8,9-dimethyl-1,7-dioxaspiro[5.5]undec-2-yl)-4,6-dimethyl-2,6-octadienylidene]-7-methyl-,[2R-[2a(1E,2E,4R*,6E),4a,6b(8R*,9S*)]]-; 1,7-Dioxaspiro[5.5]undecane,1H-2-benzopyran-1-one deriv.; Isolacrimin A