[{"from": "human", "value": "Provide a description of this molecule. [C][/C][=Branch2][Ring2][Branch2][=C][\\C][=C][\\C][=C][Branch2][Ring1][#C][\\C][=C][\\C][=C][Branch2][Ring1][#Branch1][\\C][=C][\\C][=C][Branch1][S][\\C][=C][\\C][=Branch1][C][=O][C][Branch1][Ring1][O][C][Branch1][C][C][C][/C][/C][/C][/C][=C][/C][=C][Branch2][Ring1][#Branch1][/C][=C][/C][=C][Branch1][S][/C][=C][/C][=Branch1][C][=O][C][Branch1][Ring1][O][C][Branch1][C][C][C][\\C][\\C]"}, {"from": "gpt", "value": "The molecule is a carotenoid ether that is (3E,3'E)-1,1'-dihydroxy-3,3',4,4'-tetradehydro-1,1',2,2'-tetrahydro-psi,psi-carotene-2,2'-dione in which both hydroxyl hydrogens are substituted by methyl groups. It is a carotenoid ether and a carotenone."}]