Task: Answer the MCQ question.
Question: Which compound has a -2.172\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] CCCN(C(=O)CCCSc1nc2ccccc2[nH]1)c1c(N)n(Cc2ccccc2)c(=O)[nH]c1=O
[b] CCNC(=S)Nn1cnc2ccccc21
[c] Cc1ccc(NCc2nnc(SCC(=O)Nc3ccccc3)n2CC2CCCO2)c(C)c1
Answer: b. CCNC(=S)Nn1cnc2ccccc21
{#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#}
CCNC(=S)Nn1cnc2ccccc21
CCNC(=S)Nn1cnc2ccccc21
1-(benzimidazol-1-yl)-3-ethylthiourea