Task: Answer the MCQ question.
Query: Which drug exhibits a -6.428\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) COc1ccc(/C=N/n2cc(-c3ccccc3)nc2N)cc1
(b) Br.CCCCN1C2=NCCCN2c2ccccc21
(c) Cc1nc(S(=O)(=O)c2ccc(Cl)cc2)c(N(C)C)o1
Answer: b. Br.CCCCN1C2=NCCCN2c2ccccc21
{#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#}
Br.CCCCN1C2=NCCCN2c2ccccc21
Br.CCCCN1C2=NCCCN2c2ccccc21
10-butyl-3,4-dihydro-2H-pyrimido[1,2-a]benzimidazole;hydrobromide