1,11-bis-(tert-butyl-dimethyl-silanyloxy)-2,4,6,8,10,12-hexamethyl-docosa-2,6,8-trien-5-one

11-(tert-butyl-dimethyl-silanyloxy)-2,4,6,8,10,12-hexamethyl-5-oxo-docosa-2,6,8-trienal

11-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-2,4,6,8,10,12-hexamethyl-docosa-2,6,8-trien-5-one

11-(tert-butyl-dimethyl-silanyloxy)-2,4,6,8,10,12-hexamethyl-5-oxo-docosa-2,6,8-trienoic acid

11-(tert-butyl-dimethyl-silanyloxy)-2,4,6,8,10,12-hexamethyl-5-oxo-docosa-2,6,8-trienoic acid 3-carboxy-2,3-bis-(4-methoxy-benzyloxy)-1-(4-methoxy-benzyloxymethyl)-propyl ester