Task: Answer the MCQ question.
Query: Which compound exhibits a 4.268\% 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) C=CCOC(=O)C1=C(C)NC(=S)NC1/C=C/c1ccccc1
b) O=C(NCc1cccnc1)Nc1ccc(Cl)cc1Cl
Answer: b. O=C(NCc1cccnc1)Nc1ccc(Cl)cc1Cl
{#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(NCc1cccnc1)Nc1ccc(Cl)cc1Cl
O=C(NCc1cccnc1)Nc1ccc(Cl)cc1Cl
1-(2,4-dichlorophenyl)-3-(pyridin-3-ylmethyl)urea