Task: Answer the MCQ question.
Query: Which drug exhibits a -0.652\% 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(NCc1ccncc1)c1nc(-c2cccs2)no1
[b] Cn1c(=O)c2c(nc(CN3CCOCC3)n2CCc2ccccc2)n(C)c1=O
Answer: a. O=C(NCc1ccncc1)c1nc(-c2cccs2)no1
{#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)c1nc(-c2cccs2)no1
O=C(NCc1ccncc1)c1nc(-c2cccs2)no1
N-(pyridin-4-ylmethyl)-3-thiophen-2-yl-1,2,4-oxadiazole-5-carboxamide