Task: Answer the MCQ question.
Query: Which compound has a 18.941\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] CC(C)=CCOc1c2ccoc2cc2oc(=O)ccc12
[b] CCCCNC(=S)Nc1cc([N+](=O)[O-])ccc1C
[c] CCC(=O)Nc1sc2c(c1C#N)CCCCC2
Answer: b. CCCCNC(=S)Nc1cc([N+](=O)[O-])ccc1C
{#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#}
CCCCNC(=S)Nc1cc([N+](=O)[O-])ccc1C
CCCCNC(=S)Nc1cc([N+](=O)[O-])ccc1C
1-butyl-3-(2-methyl-5-nitrophenyl)thiourea