Task: Answer the MCQ question.
Query: Which drug exhibits a 0.124\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) O=C(c1ccc(Br)s1)N1CCCC1
(b) O=C1CN(C(=O)CNCc2ccccc2)c2ccccc2N1
Answer: a. O=C(c1ccc(Br)s1)N1CCCC1
{#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(c1ccc(Br)s1)N1CCCC1
O=C(c1ccc(Br)s1)N1CCCC1
(5-bromothiophen-2-yl)-pyrrolidin-1-ylmethanone