This topic studies the common drug nomenclature. The names of drugs include generic names, chemical names and trade names of drugs. The chemical name of ibuprofen: 2- methyl -4-(2- methylpropyl) phenylacetic acid, also known as ibuprofen, ibuprofen and so on. It's an antipyretic and analgesic. The generic name refers to the active substance, not the final drug, but the name used in the Pharmacopoeia, which is the name of the active ingredient indicated in all documents, materials, teaching materials and drug instructions; The chemical name is named according to its chemical structure; The trade name is usually the final product of the drug, that is, the drug containing one or more effective ingredients whose dosage and dosage form have been determined and can be registered and applied for patent protection. The choice should not imply the curative effect and use of the drug, but should be simple and easy to read; The naming of drugs does not include Latin names and generic names. Therefore, the answer to this question should be E.