[{"from": "human", "value": "Please give me some details about this molecule. [C][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][C][O][C][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][C][O][Ring2][Ring1][#Branch2]"}, {"from": "gpt", "value": "The molecule is a crown ether that is 18-crown-6 ortho-fused to two benzene rings at positions 8-9 and 17-18. It has a role as a phase-transfer catalyst. It is a member of benzenes and a crown ether."}]