Task: Answer the multiple-choice question.
Question: Which compound exhibits a 4.589\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a O=c1c2ccccc2c(-c2ccc(Cl)cc2)nn1-c1ccccc1
b CCOc1cc(/C=C(/C#N)C(=O)Nc2ccc(O)cc2)cc(Br)c1O
c CCCC/C=C1\CCc2c([nH]c3ccccc23)C1=O
d Cc1cc(NC(=O)CSc2nnc(Nc3ccccc3)s2)no1
Answer: b. CCOc1cc(/C=C(/C#N)C(=O)Nc2ccc(O)cc2)cc(Br)c1O
{#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#}
CCOc1cc(/C=C(/C#N)C(=O)Nc2ccc(O)cc2)cc(Br)c1O
CCOc1cc(/C=C(/C#N)C(=O)Nc2ccc(O)cc2)cc(Br)c1O
(Z)-3-(3-bromo-5-ethoxy-4-hydroxyphenyl)-2-cyano-N-(4-hydroxyphenyl)prop-2-enamide