Task: Answer the MCQ question.
Query: Which compound exhibits a 1.886\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a. CNc1ccc(Cl)nn1
b. O=C(CN1CCN(c2ccccn2)CC1)Nc1ccccc1Br
c. O=C(N/N=C/c1ccc(-n2ccnc2)cc1)c1cccs1
Answer: b. O=C(CN1CCN(c2ccccn2)CC1)Nc1ccccc1Br
{#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(CN1CCN(c2ccccn2)CC1)Nc1ccccc1Br
O=C(CN1CCN(c2ccccn2)CC1)Nc1ccccc1Br
N-(2-bromophenyl)-2-(1-pyridin-2-yl-1,4-diazinan-4-yl)acetamide