2,2-Dimethylpropanoic acid, tricyclo(5.2.1.02,6)dec-3-en-9-yl ester 3a,4,5,6,7,7a-Hexahydro-4,7-methano-1H-inden-5-yl pivalate 68039-45-2 EINECS 268-261-5 Propanoic acid, 2,2-dimethyl-, 3a,4,5,6,7,7a-hexahydro-4,7-methano-1H-inden-5-yl ester