hydroxyl groups, and R3 is an hydroxyl group protected with a docosahexaenoic acid chain via an ester bond. [0037] (5) 2-(3,4-Dihydroxyphenyl) ethyl eicosapentaenoate, an hydroxytyrosol derivative having the formula IX, wherein R1 and R2 are hydroxyl groups, and R3 is an hydroxyl group protected with an eicosapentaenoic acid chain via an ester bond. [0038] (6) 2-(4-Hydroxyphenyl) ethyl acetate, a