Task: Answer the multiple choice question.
Question: Which compound exhibits a 4.178\% 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(O)c1[nH]c2ccccc2c1C(c1cc(Br)ccc1O)c1c(C(=O)O)[nH]c2ccccc12
(b) Cc1ccc(NC(=O)c2ccc(COc3ccccc3)o2)nc1
(c) c1ccc(N2CCN(c3ncccn3)CC2)cc1
Answer: c. c1ccc(N2CCN(c3ncccn3)CC2)cc1
{#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#}
c1ccc(N2CCN(c3ncccn3)CC2)cc1
c1ccc(N2CCN(c3ncccn3)CC2)cc1
2-(4-phenylpiperazin-1-yl)pyrimidine