Task: Answer the MCQ question.
Question: Which compound exhibits a -4.485\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] CCCn1c(-c2cccs2)nc2ccccc21
[b] CC(C)C(c1nnnn1Cc1cccs1)N1CCN(C(=O)c2ccco2)CC1
[c] COc1ccccc1CN1C(=O)c2ccncc2C1=O
[d] COc1cnn(-c2ccc(F)cc2)c(=O)c1Br
Answer: a. CCCn1c(-c2cccs2)nc2ccccc21
{#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#}
CCCn1c(-c2cccs2)nc2ccccc21
CCCn1c(-c2cccs2)nc2ccccc21
1-propyl-2-thiophen-2-ylbenzimidazole