Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: CSc1cc(CCN2CCN(CCc3ccc4c(c3)COC4=O)CC2)ccc1C#N
b: O=C(c1ccc(F)cc1F)N1CCN(c2ccc(OCCCN3CCCCC3)cc2)C(=O)C1.O=CO
c: CNCC[C@@H](Oc1cc(Cl)ccc1C#N)c1ccccc1
d: O=S(=O)(CCN1CCC(Cc2ccccc2)C(O)C1)c1ccc(O)cc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_blocker%}
Answer: {%multiple_choice_result}
2-methylsulfanyl-4-[2-[4-[2-(1-oxo-3H-2-benzofuran-5-yl)ethyl]piperazin-1-yl]ethyl]benzonitrile