Problem statement: Answer the MCQ question.
Question: Which drug has a 6.130\% human ether-à-go-go related gene (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) COc1ccccc1-c1cn[nH]c(=S)n1
(b) CCCCNc1cc(F)nc(N)n1
(c) Cc1nc(C(=O)N(C)C)nn1-c1cc(Cl)cc(Cl)c1
Answer: b. CCCCNc1cc(F)nc(N)n1
{#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#}
CCCCNc1cc(F)nc(N)n1
CCCCNc1cc(F)nc(N)n1
4-N-butyl-6-fluoropyrimidine-2,4-diamine