Task: Answer the multiple-choice question.
Question: Which compound exhibits a 15.918\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] CC(=O)Nc1ccc(Sc2ccccc2C(=O)O)cc1
[b] O=c1[nH]c(CSc2ccccn2)nc2c1oc1ccccc12
Answer: b. O=c1[nH]c(CSc2ccccn2)nc2c1oc1ccccc12
{#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#}
O=c1[nH]c(CSc2ccccn2)nc2c1oc1ccccc12
O=c1[nH]c(CSc2ccccn2)nc2c1oc1ccccc12
2-(pyridin-2-ylsulfanylmethyl)-3H-[1]benzofuro[3,2-d]pyrimidin-4-one