2,2-Dimethyl-propionic acid (Z)-(2R,4aR,6S,7R,11aS)-6-[(Z)-3-((4aS,6R,10aR)-7,7-bis-ethylsulfanyl-octahydro-1,5-dioxa-benzocycloocten-6-yl)-allyl]-2-phenyl-4a,6,7,8,11,11a-hexahydro-4H-1,3,5-trioxa-benzocyclononen-7-yl ester