Problem statement: Answer the multiple-choice question.
Question: Which compound has a -3.271\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] COC(=O)C1=C(c2cc3ccccc3s2)C[C@@H]2CC[C@H]1N2C(=O)N1CCOCC1
[b] CCCSc1nsc(N)n1
[c] O=C(O)c1cn(Cc2cccnc2)c(=O)c2ccccc12
[d] O=C(CCSc1ccccc1)Nc1ccccc1Br
Answer: b. CCCSc1nsc(N)n1
{#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#}
CCCSc1nsc(N)n1
CCCSc1nsc(N)n1
3-propylsulfanyl-1,2,4-thiadiazol-5-amine