Task: Answer the multiple-choice question.
Query: Which compound exhibits a 4.720\% 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.) O=C(Nc1cnccn1)Nc1ccccc1Cl
b.) CN(C)/C=C/C(=O)c1cnc(-c2ccccc2Cl)s1
c.) COc1cc(C2NC(=O)NC3=C2C(=O)CC(C)(C)C3)cc(OC)c1OC
Answer: a. O=C(Nc1cnccn1)Nc1ccccc1Cl
{#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(Nc1cnccn1)Nc1ccccc1Cl
O=C(Nc1cnccn1)Nc1ccccc1Cl
1-(2-chlorophenyl)-3-pyrazin-2-ylurea