[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a monovalent inorganic anion obtained by deprotonation of one of the two OH groups in dichromic acid. It is a chromium oxoanion and a monovalent inorganic anion. It is a conjugate base of a dichromic acid. It is a conjugate acid of a dichromate(2-)."}, {"from": "gpt", "value": "[O][Cr][=Branch1][C][=O][=Branch1][C][=O][O][Cr][=Branch1][C][=O][=Branch1][C][=O][O-1]"}]