[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][C][=Branch1][C][=O][N-1][S][=Branch1][C][=O][=Branch1][C][=O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=C][Branch1][=C][O][N][=C][Ring1][Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C].[Na+1]"}, {"from": "gpt", "value": "The molecule is a water-soluble, injectable sodium salt form of parecoxib, an amide prodrug of the cyclooxygenase II (COX-2) selective, non-steroidal anti-inflammatory drug (NSAID) valdecoxib, with anti-inflammatory, analgesic, and antipyretic activities. Upon intravenous or intramuscular administration, parecoxib is hydrolyzed by hepatic carboxyesterases to its active form, valdecoxib. Valdecoxib selectively binds to and inhibits COX-2. This prevents the conversion of arachidonic acid into prostaglandins, which are involved in the regulation of pain, inflammation, and fever. This NSAID does not inhibit COX-1 at therapeutic concentrations and, therefore, does not interfere with blood coagulation."}]