Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=C(CCCN1CCCCC1)Nc1cc(-c2cncc(F)c2)n[nH]1
b CC(C)(NCCCc1cc(-c2cccc(C(F)(F)F)c2)nc(C#N)n1)C(N)=O
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}
N-[3-(5-fluoranylpyridin-3-yl)-1H-pyrazol-5-yl]-4-piperidin-1-yl-butanamide