[{"from": "human", "value": "Describe this molecule. [C][C][O][C@H1][C][Branch2][Ring1][=Branch2][C][=C][Branch1][Ring2][O][Ring1][Branch1][C][=C][C][=Branch1][Ring2][=C][Ring1][#Branch1][O][S][=Branch1][C][=O][=Branch1][C][=O][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is the (R)-enantiomer of 2-ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-yl methanesulfonate. It is an enantiomer of a (S)-ethofumesate."}]