Showing structure for 3-[(2r,3s,3ar,5as,6r,8ar,8br)-3,8a,8b-trimethyl-6-[(2r)-6-methylhept-5-en-2-yl]-2-(2-methylprop-1-en-1-yl)-octahydro-1h-as-indacen-3-yl]propanal