Task: Answer the multiple choice question.
Question: Which compound has a -2.315\% 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(OCCOc1ccc(Br)cc1)c1cnccn1
b Cc1nn(C(C)C(=O)NCCCc2ccccc2)c(=O)c2cc3occc3n12
Answer: a. O=C(OCCOc1ccc(Br)cc1)c1cnccn1
{#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#}
O=C(OCCOc1ccc(Br)cc1)c1cnccn1
O=C(OCCOc1ccc(Br)cc1)c1cnccn1
2-(4-bromophenoxy)ethylpyrazine-2-carboxylate