Task: Answer the MCQ question.
Query: Which compound exhibits a 0.797% human ether-à-go-go related gene (hERG) inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) COc1ccc(CNC(=O)c2noc3c2CCCC3)cc1
(b) CCCCNc1cc(Cl)nc(N)n1
(c) CCC(CC)c1nnc(NC(=O)CCS(=O)(=O)Cc2ccccc2)s1
Answer: b. CCCCNc1cc(Cl)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_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
CCCCNc1cc(Cl)nc(N)n1
CCCCNc1cc(Cl)nc(N)n1
4-N-butyl-6-chloropyrimidine-2,4-diamine