Task: Answer the multiple-choice question.
Query: Which compound exhibits a 17.654\% 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 other words.
Options:
[a] O=C(O)c1c(Cl)nc2ccccn12
[b] O=C(Cc1cccc(Cl)c1)Nc1ccc(Br)cc1
[c] CN1C2CCC1CC(OC(=O)c1c[nH]c3ccccc13)C2.Cl
[d] CCOc1ccccc1OCCOc1ccccc1CC
Answer: d. CCOc1ccccc1OCCOc1ccccc1CC
{#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#}
CCOc1ccccc1OCCOc1ccccc1CC
CCOc1ccccc1OCCOc1ccccc1CC
1-ethoxy-2-[2-(2-ethylphenoxy)ethoxy]benzene