(8E,14E)-(3aR,5R,11S,15aR)-2,2,5,11-Tetramethyl-3a,4,5,10,11,15a-hexahydro-1,3,6,12-tetraoxa-cyclopentacyclotetradecene-7,13-dione

(E)-(S)-5-(Tetrahydro-pyran-2-yloxy)-hex-2-enoic acid (S)-1-furan-2-yl-ethyl ester