Task: Answer the multiple-choice question.
Question: Which drug exhibits a 2.198\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a) CCn1cc(C(=O)Nc2ccc(C)cc2C)c(=O)c2ccc(C)nc21
b) Brc1ccc(-c2cn3ccccc3n2)s1
c) Cc1ccc(CSc2nc3ccncc3n2CC(=O)Nc2cc(C)cc(C)c2)cc1
d) O=C(NCCc1c[nH]c2ccccc12)/C(=C\c1cccnc1)NC(=O)c1ccccc1Br
e) CC(C)(C)C(=O)Nc1cc(C(F)(F)F)ccc1N1CCOCC1
Answer: b. Brc1ccc(-c2cn3ccccc3n2)s1
{#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#}
Brc1ccc(-c2cn3ccccc3n2)s1
Brc1ccc(-c2cn3ccccc3n2)s1
2-(5-bromothiophen-2-yl)imidazo[1,2-a]pyridine