text: *Represents the majority 85-90% of typical tall oil.
  *abietic acid
  **abieta-7,13-dien-18-oic acid
  **13-isopropylpodocarpa -7,13-dien-15-oic acid
  *Neoabietic acid
  *Dehydroabietic acid
  *Palustric acid
  *Levopimaric acid
  *Simplified formula CHO, or CHCOOH
  *molecular weight 302