Task: Answer the MCQ question.
Query: Which compound exhibits a 13.429\% 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 CCC(C)Cn1c(C)nc2ccccc21
b O=C(O)Cn1c2c(c3ccccc31)CCCC2
c COc1ccc(Nc2ccc(S(=O)(=O)N3CCCCC3)cc2[N+](=O)[O-])cc1Cl
d Cc1c(Cl)cccc1Nc1ncccc1C(=O)OCC(O)CO
Answer: a. CCC(C)Cn1c(C)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#}
CCC(C)Cn1c(C)nc2ccccc21
CCC(C)Cn1c(C)nc2ccccc21
2-methyl-1-(2-methylbutyl)benzimidazole