Q: Please provide a description of this drug's mechanism of action.
Constraint: The Chemical has the SMILES Cc1cc(Nc2nc(N[C@@H](C)c3ncc(F)cn3)ncc2Cl)[nH]n1.
Answer: Tyrosine-protein kinase JAK2 inhibitor
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
Cc1cc(Nc2nc(N[C@@H](C)c3ncc(F)cn3)ncc2Cl)[nH]n1
Cc1cc(Nc2nc(N[C@@H](C)c3ncc(F)cn3)ncc2Cl)[nH]n1
5-chloro-2-N-[(1S)-1-(5-fluoropyrimidin-2-yl)ethyl]-4-N-(3-methyl-1H-pyrazol-5-yl)pyrimidine-2,4-diamine
Please provide a description of this drug's mechanism of action.