2-({(7S,1R)-7-[2-((7S,8R,9R)-8-Hydroxy-3,3,7,9-tetramethyl-2-oxabicyclo[5.4.0]undec-8-yl)ethyl]-1,3,7-trimethylbicyclo[4.4.0]dec-2-en-2-yl}methyl)benzene-1,4-diol AIDS-005537 AIDS005537 Shaagrockol C, p-hydroquinone deriv.