[{"from": "human", "value": "Please give me some details about this molecule. [C][C@@H1][C][O][C][=Branch1][C][=O][C@H1][Ring1][=Branch1][C@@H1][Branch1][C][C][O]"}, {"from": "gpt", "value": "The molecule is a gamma-lactone that is dihydrofuran-2(3H)-one substituted by a hydroxyethyl group at position 3 and a methyl group at position 4 (the 3R,4S,1'R stereoisomer). Isolated from an edible mushroom Mycoleptodonoides aitchisonii, it exhibits protective activity against endoplasmic reticulum (ER) stress dependent cell death. It has a role as a metabolite and a neuroprotective agent. It is a gamma-lactone and a secondary alcohol."}]