Task: Answer the multiple-choice question.
Query: Which drug exhibits a 4.085\% 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. Nc1ccc2cc(Br)ccc2c1
b. Cc1cc(C)c(S(=O)(=O)N(C)Cc2cnn(C)c2)c(C)c1
c. O=C(Nc1cccc(Cl)c1)N1N=CCC1c1ccccc1
d. COC(=O)c1ccc(NC(=O)CN2CCCC2)cc1
Answer: a. Nc1ccc2cc(Br)ccc2c1
{#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#}
6-bromonaphthalen-2-amine