Task: Answer the multiple choice question.
Question: Which compound has a 17.800\% 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) CCn1c(C)nc2cc(S(N)(=O)=O)ccc21
b) COc1ccc(/C=N/n2c(C3CCCCC3)n[nH]c2=S)c(OC)c1
c) COc1cccc(/C=N/NC(=O)c2cc3cc([N+](=O)[O-])ccc3s2)c1O
d) NS(=O)(=O)c1ccc(CCNC(=O)CNS(=O)(=O)c2cccc(Br)c2)cc1
Answer: a. CCn1c(C)nc2cc(S(N)(=O)=O)ccc21
{#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#}
CCn1c(C)nc2cc(S(N)(=O)=O)ccc21
CCn1c(C)nc2cc(S(N)(=O)=O)ccc21
1-ethyl-2-methylbenzimidazole-5-sulfonamide