<; p >; a compound represented by the following formula, where r is selected from the group consisting of benzyl alkyl C3, C3 alquenilo - 11, - 11, - 9 alquenilo branched alkyl branched C2, C3 - 9- and ch2oac. <; / p >;<;p>;UN COMPUESTO REPRESENTADO POR LA SIGUIENTE FÓ;RMULA, EN DONDE R SE SELECCIONA DEL GRUPO QUE CONSISTE EN BENCILO, ALQUILO C3-11, ALQUENILO C3-11, ALQUENILO RAMIFICADO C2-9, ALQUILOS RAMIFICADO C3-9, Y -CH2OAC.<;/p>;