User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is an osmium coordination entity consisting of four oxygen atoms bound to a central osmium atom via covalent double bonds. It has a role as an oxidising agent, a poison, a fixative and a histological dye.
Assistant: This is a molecule that fits your description: O=[Os](=O)(=O)=O
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
O=[Os](=O)(=O)=O
tetraoxoosmium
The molecule is an osmium coordination entity consisting of four oxygen atoms bound to a central osmium atom via covalent double bonds. It has a role as an oxidising agent, a poison, a fixative and a histological dye.