Q: How many hydrogen bond acceptors does this compound have?
Constraint: The Molecule can be represented with the SMILES O=C1c2ccccc2C(=O)C1c1ccccc1.
Result: 2
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O=C1c2ccccc2C(=O)C1c1ccccc1
O=C1c2ccccc2C(=O)C1c1ccccc1
2-phenylindene-1,3-dione
How many hydrogen bond acceptors does this compound have?