Task: Answer the multiple choice question.
Query: Which compound exhibits a 4.486\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a CC(C)(C)CN1CCC(n2nccc2NC(=O)c2ccccc2Cl)CC1
b Cc1nc2cccnc2nc1C
c CN=C(Nc1ccc(Cl)cc1)c1cccc(C(F)(F)F)c1
d Cc1nc(-c2ccc([N+](=O)[O-])cc2)c(-c2ccccc2)o1
Answer: b. Cc1nc2cccnc2nc1C
{#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#}
Cc1nc2cccnc2nc1C
Cc1nc2cccnc2nc1C
2,3-dimethylpyrido[2,3-b]pyrazine