Problem statement: Answer the multiple choice question.
Question: Which compound exhibits a 18.746\% 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) CCN(CC(=O)NCCc1ccc(Cl)cc1)Cc1nc2ccccc2c(=O)[nH]1
(b) O=C(COC(=O)c1ccc([N+](=O)[O-])s1)Nc1ccc(Cl)cn1
(c) N=c1c2ccccc2nnn1-c1cccc(C(F)(F)F)c1
(d) O.[O-][N+]12CCN(CC1)c1ccccc12
Answer: d. O.[O-][N+]12CCN(CC1)c1ccccc12
{#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.[O-][N+]12CCN(CC1)c1ccccc12
O.[O-][N+]12CCN(CC1)c1ccccc12
1-oxido-8-aza-1-azoniatricyclo[6.2.2.02,7]dodeca-2,4,6-triene;hydrate