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fenoprop

n. 2-(2,4,5-trichlorophenoxy)propionic acid, a herbicide formerly used to control woody plants and broadleaf weeds.

Wikipedia
Fenoprop

Fenoprop, or 2-(2,4,5-trichlorophenoxy)propionic acid, is an herbicide and a plant growth regulator. Fenoprop has been banned from use as an herbicide in the United States since 1985. The name Silvex was used in the USA. The name 2,4,5-TP is used in France and was used in the former USSR (2,4,5-ТП).

Fenoprop was once used as an herbicide for control of woody plants and broadleaf weeds.