Rustmicin

Galbonolide A

(-)-Galbonolide A

(3R,5S,7Z,9S,12E,14S)-14-Ethyl-5-hydroxy-5-(hydroxymethyl)-7-methoxy-3,9,13-trimethyl-11-methylene-1-oxacyclotetradeca-7,12-diene-2,4-dione