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The structure of thedrugtofacitinib with explicitly shown all carbon and hydrogenatomsis shown below.Adrugis any chemical substance that causes a change in an organism's physiology or psychology when consumed.Drugs are typically distinguished from food and substances that provide nutritional support. Consumption of drugs can be via inhalation, injection, smoking, ingestion, absorption via a patch on theskin,suppository, or dissolution under the tongue.Inpharmacology,a drug is a chemical substance, typically of known structure, which, when administered to a living organism, produces abiological effect.A pharmaceutical drug, also called a medication or medicine, is a chemical substance used to treat, cure, prevent, or diagnose adiseaseor to promote well-being.Learn more aboutdrugs ,here:brainly.com/question/29767316#SPJ12...