[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][N][C@@H1][Branch1][Ring1][C][S][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion that is the conjugate base of N-acetyl-L-cysteine, obtained by deprotonation of the carboxy group; major species at pH 7.3. It has a role as an antidote to paracetamol poisoning, an antiinfective agent, an antioxidant, an antiviral drug, a mucolytic, a vulnerary and a human metabolite. It is a conjugate base of a N-acetyl-L-cysteine."}]