Task: Answer the multiple-choice question.
Query: Which compound exhibits a -0.139\% 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 Cc1ccc2[nH]c3c(NCc4ccco4)ncnc3c2c1
b CCc1ccc(C(=O)COC(=O)c2ccco2)cc1
Answer: a. Cc1ccc2[nH]c3c(NCc4ccco4)ncnc3c2c1
{#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#}
Cc1ccc2[nH]c3c(NCc4ccco4)ncnc3c2c1
Cc1ccc2[nH]c3c(NCc4ccco4)ncnc3c2c1
N-(furan-2-ylmethyl)-8-methyl-5H-pyrimido[5,4-b]indol-4-amine