Task: Please answer the following question about the molecule with SMILES NC(CO)(CO)CO.
Description: How many hydrogen bond donors are there in this compound, calculated according to Lipinski's original rules (i.e., counting NH and OH groups)?
Result: 5
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
NC(CO)(CO)CO
NC(CO)(CO)CO
2-amino-2-(hydroxymethyl)propane-1,3-diol
How many hydrogen bond donors are there in this compound, calculated according to Lipinski's original rules (i.e., counting NH and OH groups)?