[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an extracellular plant cysteine proteinase similar to papain in specificity. Chymopapain was developed by Chart Medcl and FDA approved on November 10, 1982. It is currently discontinued."}, {"from": "gpt", "value": "[C][=C][Branch2][Ring1][Branch1][C][=C][Branch1][=Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}]