Question: How many hydrogen bond donors does this compound have?
Constraint: The Compound can be represented with the SMILES N[C@@H](CCC(=O)O)C(=O)O.
Result: 3
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
N[C@@H](CCC(=O)O)C(=O)O
N[C@@H](CCC(=O)O)C(=O)O
(2S)-2-aminopentanedioicacid
How many hydrogen bond donors does this compound have?