oxymetazoline2-(4-tert-butyl-2,6-dimethyl-3-hydroxybenzyl)-2-imidazoline3-[(4,5-dihydro-1H-imidazol-2-yl)methyl]-6-(1,1-dimethylethyl)-2,4-dimethylphenol6-t-butyl-3-(2-imidazolin-2-ylmethyl)-2,4-dimethylphenol6-tert-butyl-3-(2-imidazolin-2-ylmethyl)-2,4-dimethylphenol