Task: Answer the MCQ question.
Question: Which compound exhibits a -0.693\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] CCCCn1c(O)c(N=NC(=O)Cn2c(C(F)(F)F)nc3ccccc32)c2ccccc21
[b] CSC1=C(C#N)C(C)CC(=O)N1
[c] Cc1cc(C(F)(F)F)c2c(C)nn(-c3ccccc3)c2n1
[d] CCn1c(SCC(=O)c2[nH]c(C)c(C(C)=O)c2C)nnc1-c1ccccc1
Answer: b. CSC1=C(C#N)C(C)CC(=O)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#}
CSC1=C(C#N)C(C)CC(=O)N1
CSC1=C(C#N)C(C)CC(=O)N1
4-methyl-6-methylsulfanyl-2-oxo-3,4-dihydro-1H-pyridine-5-carbonitrile