IUPAC:(2E)-4-[(2S,8S,17S)-12-hydroxy-8,21,21-trimethyl-5-(3-methylbut-2-en-1-yl)-8-(4-methylpent-3-en-1-yl)-14,18-dioxo-3,7,20-trioxahexacyclo[15.4.1.0^{2,15}.0^{2,19}.0^{4,13}.0^{6,11}]docosa-4(13),5,9,11,15-pentaen-19-yl]-2-(hydroxymethyl)but-2-enoic acid
IUPAC:(2E)-4-[(2S,8S,17S)-12-hydroxy-8,21,21-trimethyl-5-(3-methylbut-2-en-1-yl)-8-(4-methylpent-3-en-1-yl)-14,18-dioxo-3,7,20-trioxahexacyclo[15.4.1.0^{2,15}.0^{2,19}.0^{4,13}.0^{6,11}]docosa-4(13),5,9,11,15-pentaen-19-yl]-2-(hydroxymethyl)but-2-enoic acid