Task: Answer the MCQ question.
Question: Which compound exhibits a -13.343\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) CC(Oc1ccc(C(C)(C)C)cc1)C(=O)NC1CC(C)(C)NC(C)(C)C1
(b) CCS(=O)c1scc(-c2ccc(Cl)cc2)c1C#N
Answer: b. CCS(=O)c1scc(-c2ccc(Cl)cc2)c1C#N
{#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#}
CCS(=O)c1scc(-c2ccc(Cl)cc2)c1C#N
CCS(=O)c1scc(-c2ccc(Cl)cc2)c1C#N
4-(4-chlorophenyl)-2-ethylsulfinylthiophene-3-carbonitrile