Task: Answer the multiple choice question.
Query: Which compound has a -6.322\% 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 O=C(Nc1ccc(N2CCN(C(=O)c3ccccc3)CC2)cc1)c1ccc(Br)o1
b CNC(=O)Oc1ccc2c(c1)[C@]1(C)CCN(C)C1N2C.O=S(=O)(O)O
c CC1=C(C#N)C2C(/C1=N/O)C2(C)C
d COc1cccc(CC(=O)OCC(=O)c2cc(OC)ccc2OC)c1
Answer: a. O=C(Nc1ccc(N2CCN(C(=O)c3ccccc3)CC2)cc1)c1ccc(Br)o1
{#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(Nc1ccc(N2CCN(C(=O)c3ccccc3)CC2)cc1)c1ccc(Br)o1
O=C(Nc1ccc(N2CCN(C(=O)c3ccccc3)CC2)cc1)c1ccc(Br)o1
N-[4-(4-benzoylpiperazin-1-yl)phenyl]-5-bromofuran-2-carboxamide