4-[(2E,7S,8E,10E,13R,14R,16E,18E)-14-ethyl-7,13-dihydroxy-2,16,18-trimethylicosa-2,8,10,16,18-pentaenoyl]-2-methylidene-5-oxo-2,5-dihydro-1H-pyrrol-3-olate
4-[(2e,7s,8e,10e,13r,14r,16e,18e)-14-ethyl-7,13-dihydroxy-2,16,18-trimethylicosa-2,8,10,16,18-pentaenoyl]-2-methylidene-5-oxo-2,5-dihydro-1h-pyrrol-3-olate