[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an alkatriene. It has a role as a fluorochrome."}, {"from": "gpt", "value": "[C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][/C][=C][/C][=C][/C][=C][/C][=C][C][=C][C][=C][Ring1][=Branch1]"}]