89768-80-9 9,12-Methanoisoindolo[1,2-a]isoquinoline-8-carboxylic acid,8-formyl-5,6,8,8a,9,10,11,12,12a,12b-decahydro-, methyl ester 89768-81-0 9,12-Methanoisoindolo[1,2-a]isoquinoline-8-carboxylic acid,5,6,8,8a,9,10,11,12,12a,12b-decahydro-8-(hydroxymethoxymethyl)-,methyl ester