Problem statement: Answer the multiple choice question.
Query: Which drug exhibits a 18.173\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) O=C(NCC(c1cccnc1)N1CCN(c2ccccc2F)CC1)Oc1ccccc1
(b) O=C(OCC(=O)N1CCN(c2ccccc2)CC1)C1=COCCO1
Answer: b. O=C(OCC(=O)N1CCN(c2ccccc2)CC1)C1=COCCO1
{#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#}
[2-oxo-2-(4-phenylpiperazin-1-yl)ethyl] 2,3-dihydro-1,4-dioxine-5-carboxylate