3b,5a-Etheno-1H-benz[c]indeno[5,4-e][1,2]dioxin-7-ol, 1-[(2E,4R)-4-ethyl-1,5-dimethyl-2-hexenyl]-2,3,3a,6,7,8,9,9a,9b,10,11,11a-dodecahydro-9a,11a-dimethyl-, (1R,7S,9aR,11aR)- AIDS-181890 AIDS181890