(4R,5S,10R,11S,15R)-(2E,8E)-15-hydroxy-4,10-bis[(2-methoxyethoxy)methoxy]-5,11-dimethyl-6,12-dioxa-1,7,13-trioxo-2,8-hexadecadienoic acid

(5R,6S,11R,12S,16S)-(3E,9E)-5,11-bis[(2-methoxyethoxy)methyl]-6,12,16-trimethyl-1,7,13-trioxacyclohexadeca-3,9-diene-2,8,14-trione