Question: How many hydrogen bond donors are there in this compound, calculated according to Lipinski's original rules (i.e., counting NH and OH groups)?
 The Compound can be represented with the SMILES Fc1cc(F)c2c(c1)C[C@@H](n1c(CCNCc3ccccc3)c[nH]c1=S)CO2.
Result: 2
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
Fc1cc(F)c2c(c1)C[C@@H](n1c(CCNCc3ccccc3)c[nH]c1=S)CO2
Fc1cc(F)c2c(c1)C[C@@H](n1c(CCNCc3ccccc3)c[nH]c1=S)CO2
4-[2-(benzylamino)ethyl]-3-[(3R)-6,8-difluoro-3,4-dihydro-2H-chromen-3-yl]-1H-imidazole-2-thione
How many hydrogen bond donors are there in this compound, calculated according to Lipinski's original rules (i.e., counting NH and OH groups)?