Task: Answer the MCQ question.
Query: Which drug exhibits a -2.149\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: O=C(CN1CCCCCCC1)N/N=C/c1ccccc1F
b: O=C(O)C1=C[C@@H](C2CC2)C[C@@H](OCc2ccc(CO)cc2)O1
c: c1nc2sc3c(c2c2nnnn12)CCCC3
Answer: a. O=C(CN1CCCCCCC1)N/N=C/c1ccccc1F
{#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(CN1CCCCCCC1)N/N=C/c1ccccc1F
O=C(CN1CCCCCCC1)N/N=C/c1ccccc1F
2-(azocan-1-yl)-N-[(E)-(2-fluorophenyl)methylideneamino]acetamide