trimethyl(((4aS,8aR)-4a-methyl-3,4,4a,7,8,8a-hexahydro-1H-spiro[naphthalene-2,2'-[1,3]dioxolan]-5-yl)oxy)silane

(7R,8S)-7-(3-(1,3-dithian-2-ylidene)propyl)-8-methyl-8-((1E,3E)-penta-1,3-dien-1-yl)-1,4-dioxaspiro[4.5]decane