Synonyms: Glabratephrin;AC1O55CN;[(3'S)-2',2'-dimethyl-4,5'-dioxo-2-phenylspiro[8H-furo[2,3-h]chromene-9,4'-oxolane]-3'-yl] acetate;51311-64-9;Spiro(furan-3(2H),9'(8H)-(4H)furo(2,3-h)(1)benzopyran)-2,4'-dione, 4-(acetyloxy)-4,5-dihydro-5,5-dimethyl-2'-phenyl-, trans-(-)-