Task: Answer the MCQ question.
Query: Which compound exhibits a 16.457\% 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 other words.
Options:
a. COc1ccc(Br)cc1CN1CCSCC1
b. Cc1ccc(NC(=O)CCN2C(=O)NC3(CCCC3)C2=O)c(C)c1
Answer: a. COc1ccc(Br)cc1CN1CCSCC1
{#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#}
COc1ccc(Br)cc1CN1CCSCC1
COc1ccc(Br)cc1CN1CCSCC1
4-[(5-bromo-2-methoxyphenyl)methyl]thiomorpholine