[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a monothiocarboxylic acid that is the thiolacid analogue of glycine. The parent of the class of thioglycines. It is an organosulfur compound and a member of thioglycines. It is functionally related to an ethanethioic S-acid."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][=Branch1][C][=O][S][N]"}]