(E)-3-(2-Methyl-oxazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-11-hydroxymethyl-8-isopropyl-12-methoxy-1,5-dimethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10,13-trien-2-yl ester

(E)-3-(2-Methyl-oxazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-11-formyl-8-isopropyl-12-methoxy-1,5-dimethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10,13-trien-2-yl ester

(E)-3-(1-Methyl-1H-imidazol-4-yl)-acrylic acid (Z)-(1S,2S,4R,8R,9S,12R)-11-acetoxymethyl-8-isopropyl-12-methoxy-1,5-dimethyl-15-oxa-tricyclo[10.2.1.04,9]pentadeca-5,10,13-trien-2-yl ester