IUPAC:17-ethyl-6-hydroxy-3,5,7,9,11,15-hexamethyl-8-oxo-19-(6-oxo-3,6-dihydro-2H-pyran-2-yl)nonadeca-2,10,12,16,18-pentaenoic acid
IUPAC:17-ethyl-6-hydroxy-3,5,7,9,11,15-hexamethyl-8-oxo-19-(6-oxo-3,6-dihydro-2H-pyran-2-yl)nonadeca-2,10,12,16,18-pentaenoic acid