[{"from": "human", "value": "What can you tell me about this molecule? [NH4+1].[O-1][Mn][=Branch1][C][=O][=Branch1][C][=O][=O]"}, {"from": "gpt", "value": "The molecule appears as a crystal or powder with a rich violet-brown or dark purple metallic sheen. Toxic by ingestion or inhalation of dust."}]