(5R)-5-hydroxy-2,4,4,5-tetramethyl-3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-tetramethyl-18-(2,6,6-trimethylcyclohex-1-en-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl]cyclohex-2-en-1-one
(5r)-5-hydroxy-2,4,4,5-tetramethyl-3-[(1e,3e,5e,7e,9e,11e,13e,15e,17e)-3,7,12,16-tetramethyl-18-(2,6,6-trimethylcyclohex-1-en-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl]cyclohex-2-en-1-one
A natural product found in <em>Daphnia magna</em>.