I tried putting the names together myself, now need someone to check them:
1a) (1R,4S,4aS,8aR)-4a,8a-dichloro-2,3,5,5,6,7,8,8-octahydro-1,4-methanonaphthalene-1,4-dicarbonitrile
1b) (1R,4S,4aR,8aS)-4a,8a-dichloro-2,3,5,5,6,7,8,8-octahydro-1,4-methanonaphthalene-1,4-dicarbonitrile
2a) (1R,4S,4aS,8aR)-6,7-dichloro-2,3,4a,5,5,8,8,8a-octahydro-1,4-methanonaphthalene-1,4-dicarbonitrile
2b) (1R,4S,4aR,8aS)-6,7-dichloro-2,3,4a,5,5,8,8,8a-octahydro-1,4-methanonaphthalene-1,4-dicarbonitrile
3a) (1R,4S,4aS,8aR)-4a-methoxy-5,8-dioxa-2,3,6,6,7,7,8a-heptahydro-1,4-methanonaphthalene-1,4-dicarbonitrile
3b) (1R,4S,4aR,8aS)-4a-methoxy-5,8-dioxa-2,3,6,6,7,7,8a-heptahydro-1,4-methanonaphthalene-1,4-dicarbonitrile
Hope someone can help me with this,
sumi