2(1H)-naphthalenone, 1-(3-butynyl)octahydro-5,5,8a-trimethyl-, (1R,4aS,8aS)- InChI=1/C17H26O/c1-5-6-8-13-14(18)9-10-15-16(2,3)11-7-12-17(13,15)4/h1,13,15H,6-12H2,2-4H3/t13-,15-,17+/m0/s rel-(1R,4aS,8aS)-1-but-3-yn-1-yl-5,5,8a-trimethyloctahydronaphthalen-2(1H)-one