Task: Please answer the following question about the molecule with SMILES O=C([O-])CCCO.[Na+].
Question: How many hydrogen bond acceptors does this compound have?
Answer: 2
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=C([O-])CCCO.[Na+]
O=C([O-])CCCO.[Na+]
sodium;4-hydroxybutanoate
How many hydrogen bond acceptors does this compound have?