Task: Answer the multiple-choice question.
Question: Which drug exhibits a 18.363\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=c1[nH]c(NCCO)nc2c1C1(CCCC1)Cc1ccccc1-2
b Cn1c(-c2ccsc2)c(-c2cccs2)c2cc(-c3cccc4[nH]ccc34)ccc21
Answer: b. Cn1c(-c2ccsc2)c(-c2cccs2)c2cc(-c3cccc4[nH]ccc34)ccc21
{#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#}
Cn1c(-c2ccsc2)c(-c2cccs2)c2cc(-c3cccc4[nH]ccc34)ccc21
Cn1c(-c2ccsc2)c(-c2cccs2)c2cc(-c3cccc4[nH]ccc34)ccc21
5-(1H-indol-4-yl)-1-methyl-3-thiophen-2-yl-2-thiophen-3-ylindole