Task: Answer the multiple-choice question.
Question: Which drug has a -0.425\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] COc1ccc(C(c2sc3nc(C)nn3c2O)N2CC(C)OC(C)C2)cc1OC
[b] CCC(CC)CN1CCN=C1N(C)C
Answer: b. CCC(CC)CN1CCN=C1N(C)C
{#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(CC)CN1CCN=C1N(C)C
CCC(CC)CN1CCN=C1N(C)C
1-(2-ethylbutyl)-N,N-dimethyl-4,5-dihydroimidazol-2-amine