Task: Answer the following question about the molecule with SMILES CC(=O)c1cc2c(o1)C(=O)c1ccccc1C2=O.
Request: How many heavy (non-hydrogen) atoms does this compound have?
Result: 18
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
CC(=O)c1cc2c(o1)C(=O)c1ccccc1C2=O
CC(=O)c1cc2c(o1)C(=O)c1ccccc1C2=O
2-acetylbenzo[f][1]benzofuran-4,9-dione
How many heavy (non-hydrogen) atoms does this compound have?