Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a 3.540\% human ether-à-go-go related gene (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(Cn1cnc2ccccc21)c1ccc(Br)cc1
b CCOC(=O)/C(C#N)=N/Nc1cc(OC)ccc1OC
Answer: a. O=C(Cn1cnc2ccccc21)c1ccc(Br)cc1
{#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(Cn1cnc2ccccc21)c1ccc(Br)cc1
O=C(Cn1cnc2ccccc21)c1ccc(Br)cc1
[O][=C][Branch1][#C][C][N][C][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1]
2-(benzimidazol-1-yl)-1-(4-bromophenyl)ethanone