[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a mineral with formula of KBF4. The corresponding IMA (International Mineralogical Association) number is  . The IMA symbol is Avg."}, {"from": "gpt", "value": "[B-1][Branch1][C][F][Branch1][C][F][Branch1][C][F][F].[K+1]"}]