Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 2.729\% human ether-à-go-go related gene (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] CCn1c(C)nc2c1C(=O)c1ccccc1C2=O
[b] CCCCCCNC1=NCCS1
[c] COC(=O)[C@H](C)NC(=O)Nc1ccccc1C(F)(F)F
[d] C(=N\Nc1nc(-c2ccccc2)cc(-c2ccccc2)n1)\c1cccnc1
Answer: a. CCn1c(C)nc2c1C(=O)c1ccccc1C2=O
{#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#}
CCn1c(C)nc2c1C(=O)c1ccccc1C2=O
CCn1c(C)nc2c1C(=O)c1ccccc1C2=O
3-ethyl-2-methylbenzo[f]benzimidazole-4,9-dione