Task: Answer the multiple choice question.
Question: Which drug exhibits a 17.127\% 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 CCOc1ccc(C(C)=O)cc1Cc1c(O)nc(N)[nH]c1=O
b O=c1[nH]c(CSc2nnc(NCCCN3CCOCC3)s2)nc2cc(Cl)ccc12
c COC(=O)c1cc(NC(=O)Cc2ccccc2[N+](=O)[O-])ccc1Cl
d O=C(NCc1ccccc1)c1nccnc1CO
Answer: d. O=C(NCc1ccccc1)c1nccnc1CO
{#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(NCc1ccccc1)c1nccnc1CO
O=C(NCc1ccccc1)c1nccnc1CO
N-benzyl-3-(hydroxymethyl)pyrazine-2-carboxamide