Task: Answer the multiple choice question.
Query: Which compound has a 16.387\% 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(CCn1c(=O)oc2ccccc21)Nc1ccc(N2CCOCC2)cc1
(b) CCN1CCN(C(=S)Nc2ccccc2Cl)CC1
Answer: b. CCN1CCN(C(=S)Nc2ccccc2Cl)CC1
{#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#}
CCN1CCN(C(=S)Nc2ccccc2Cl)CC1
CCN1CCN(C(=S)Nc2ccccc2Cl)CC1
N-(2-chlorophenyl)-4-ethylpiperazine-1-carbothioamide