(3'alpha,4'alpha,7'alpha,7'aalpha)-Octahydrospiro(1,3-dioxolane-2,5'-(4,7)methano(5H)indene) 15591-90-9 EINECS 239-659-6 Spiro(1,3-dioxolane-2,5'-(4,7)methano(5H)indene), octahydro-, (3'aalpha,4'alpha,7'alpha,7'aalpha)-