<unk>  (chemical formula C6H4(HO)COOCH3; also known as salicylic acid<unk>  ester, oil of wintergreen, betula oil,<unk> -2-hydroxybenzoate) is a natural product of many species of plants.  Some of the plants producing it are called wintergreens, hence the common name.
Methyl salicylate
Potassium salicylate
Caffeine
Aluminium chloride
Benzydamine
Phenoperidine
Rotenone
Nimesulide