2-({7-[2-((3S,2R)-2,3,7,7-Tetramethylbicyclo[4.4.0]dec-1(10)-en-2-yl)ethyl](7S,2R,3R)-2,3,7-trimethylbicyclo[4.4.0]dec-5-en-2-yl}methyl)benzene-1,4-diol AIDS-005534 AIDS005534 Toxiusol, p-hydroquinone deriv.