IUPAC:(1R,7S,8S,9R)-7-(acetyloxy)-9-[(1E,3E)-4-carboxy-4-methylbuta-1,3-dien-1-yl]-9-methyl-11-oxo-10-oxatricyclo[6.3.2.0^{1,7}]tridec-3-ene-4-carboxylic acid
IUPAC:(1R,7S,8S,9R)-7-(acetyloxy)-9-[(1E,3E)-4-carboxy-4-methylbuta-1,3-dien-1-yl]-9-methyl-11-oxo-10-oxatricyclo[6.3.2.0^{1,7}]tridec-3-ene-4-carboxylic acid