Task: Answer the multiple-choice question.
Question: Which drug has a 0.778\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a CC(=O)NC(CCS(C)(=O)=O)C(=O)Nc1cc(C)ccc1C
b N#CC1(c2ccccc2)CCCN1C(=O)c1ccc(Br)cc1
c CCCNC(=O)c1ccccc1NC(=O)Nc1ccccc1C
d CN(C)c1ccc(NC(N)=S)cc1
Answer: b. N#CC1(c2ccccc2)CCCN1C(=O)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#}
1-(4-bromobenzoyl)-2-phenylpyrrolidine-2-carbonitrile