Structure of 291860 DL-a-Tocopherol; Rac-alpha-Tocopherol; Vitamin E (DL-FORM); Tocopherol, Alpha-DL-; [2theta(4theta,8theta)]-(+/-)-yl); 3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)-,[2R*(4R*,8R*)]-(+-)-2H-1-Benzopyran-6-ol; ALPHA-Tocopherolum; (+/-)-alpha-Tocoferol; (+/-)-alpha-T