Task: Please answer the following question about the molecule with SMILES Nc1ncnc2c1ncn2CCOCP(=O)(O)O.
Question: How many heavy (non-hydrogen) atoms does this compound have?
Completion: 18
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
Nc1ncnc2c1ncn2CCOCP(=O)(O)O
Nc1ncnc2c1ncn2CCOCP(=O)(O)O
9-[2-(phosphonomethoxy)ethyl]purin-6-amine
How many heavy (non-hydrogen) atoms does this compound have?
18