Task: Please answer the following question about the molecule with SMILES O=C(O)C(S)C(S)C(=O)O.[99Tc].
Description: Please describe this drug.
Answer: Technetium Tc 99m succimer is a thia fatty acid.
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=C(O)C(S)C(S)C(=O)O.[99Tc]
C(C(C(=O)O)S)(C(=O)O)S.[99Tc]
2,3-bis(sulfanyl)butanedioic acid;technetium-99
Please describe this drug.