Task: Answer the multiple-choice question.
Question: Which compound has a 3.429\% 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, b, c, or d without using any additional words.
Options:
a) COc1ccc(C(C)(C)C)cc1S(=O)(=O)N1CCN(C)CC1
b) O=C1CCCc2nn(-c3ccccc3)c(-c3ccncc3)c21
c) N#CC1=C(N)OC2=C(C(=O)CCC2)C1c1cccs1
d) CCOC(=O)c1sc(N)c(C(=O)OCC)c1COC(=O)C1CC(=O)N(Cc2ccco2)C1
Answer: a. COc1ccc(C(C)(C)C)cc1S(=O)(=O)N1CCN(C)CC1
{#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#}
4-(5-tert-butyl-2-methoxyphenyl)sulfonyl-1-methylpiperazine