Task: Answer the multiple-choice question.
Question: Which compound exhibits a 6.241\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a.) CCC(=O)NC(NC(=S)Nc1ccccc1Br)C(Cl)(Cl)Cl
b.) O=C(NCc1ccncc1)Nc1cccc([N+](=O)[O-])c1
c.) CC(C)C1C(C#N)=C(N)Oc2n[nH]c(-c3ccccc3)c21
d.) CCOC(=O)N1CCN(S(=O)(=O)N2CCCC(C(=O)NC(C)c3ccccc3)C2)CC1
Answer: b. O=C(NCc1ccncc1)Nc1cccc([N+](=O)[O-])c1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__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_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C(NCc1ccncc1)Nc1cccc([N+](=O)[O-])c1
O=C(NCc1ccncc1)Nc1cccc([N+](=O)[O-])c1
oxido-oxo-[3-(pyridin-4-ylmethylcarbamoylamino)phenyl]azanium