Task: Answer the MCQ question.
Question: Which compound exhibits a -0.690\% 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) O=C(NCCCO)c1nnc(Cc2c(F)cccc2Cl)o1
b) CCSc1nc2ccccc2[nH]1
Answer: b. CCSc1nc2ccccc2[nH]1
{#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#}
CCSc1nc2ccccc2[nH]1
CCSc1nc2ccccc2[nH]1
2-ethylsulfanyl-1H-benzimidazole