Problem statement: Answer the MCQ question.
Question: Which drug exhibits a 2.027\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] COc1ccccc1OCCCCCc1c(C)n[nH]c1C
[b] CCOc1ccc(NC(=O)c2ccccc2CO)cc1
Answer: a. COc1ccccc1OCCCCCc1c(C)n[nH]c1C
{#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#}
COc1ccccc1OCCCCCc1c(C)n[nH]c1C
COc1ccccc1OCCCCCc1c(C)n[nH]c1C
4-[5-(2-methoxyphenoxy)pentyl]-3,5-dimethyl-1H-pyrazole