Q: How many hydrogen bond acceptors are there in this compound, calculated according to Lipinski's original rules (i.e., counting N and O atoms)?
 The Compound can be represented with the SMILES O=C(O)[C@@H](S)[C@@H](S)C(=O)O.
Answer: 4
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O=C(O)[C@@H](S)[C@@H](S)C(=O)O
O=C(O)[C@@H](S)[C@@H](S)C(=O)O
(2R,3S)-2,3-bis(sulfanyl)butanedioicacid
How many hydrogen bond acceptors are there in this compound, calculated according to Lipinski's original rules (i.e., counting N and O atoms)?