[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Ring1][=Branch2]"}, {"from": "gpt", "value": "The molecule is an ortho-fused bicyclic hydrocarbon consisting of a benzene ring fused to a cyclopentane ring; a high-boiling (176 (o)C) colourless liquid. It is a member of indanes and an ortho-fused bicyclic hydrocarbon."}]