Task: Answer the multiple-choice question.
Question: Which compound exhibits a 18.954\% 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. CCC1=[N+](C)CCn2c(C)ccc21.[I-]
b. O=C(C[n+]1cc(Br)cc(Br)c1)c1cccc([N+](=O)[O-])c1.[Cl-]
Answer: a. CCC1=[N+](C)CCn2c(C)ccc21.[I-]
{#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#}
CCC1=[N+](C)CCn2c(C)ccc21.[I-]
CCC1=[N+](C)CCn2c(C)ccc21.[I-]
1-ethyl-2,6-dimethyl-3,4-dihydropyrrolo[1,2-a]pyrazin-2-ium;iodide