Task: Answer the MCQ question.
Question: Which compound exhibits a 4.163\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a) C=CCN(C(=O)CCC(=O)Nc1cc(C)on1)C(C(=O)NC(C)(C)C)c1cccc(OC)c1OC
b) CCOC(=O)c1sc2nc(C)cc(-c3ccccc3)c2c1N
c) O=C(c1ccc(-c2ccccc2)c(F)c1)C1CCCN(CCO)C1
d) Nc1nnc(SCC(=O)NC2CCCCC2)n1-c1ccccc1
e) O=c1ccc2cc3c([nH]c4ccc(Br)cc43)oc-2c1O
Answer: e. O=c1ccc2cc3c([nH]c4ccc(Br)cc43)oc-2c1O
{#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#}
9-bromo-4-hydroxy-6H-chromeno[2,3-b]indol-3-one