Task: Answer the multiple-choice question.
Question: Which compound has a 2.853\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
(a) CN1CCN(Cc2nc3ccccc3n2C)CC1
(b) CCN(CC(=O)NCc1ccccn1)S(=O)(=O)c1ccc(Cl)cc1
(c) CC1CCCN(C(C(=O)NC2CCCCC2)c2cc3c(cc2[N+](=O)[O-])OCO3)C1
(d) CC(C)N1CCN(Cc2ccc(C#CC(C)(C)O)cc2)CC1CCO
(e) O=S(=O)(Nc1nnc(C2CC2)s1)c1ccccc1
Answer: a. CN1CCN(Cc2nc3ccccc3n2C)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#}
CN1CCN(Cc2nc3ccccc3n2C)CC1
CN1CCN(Cc2nc3ccccc3n2C)CC1
1-methyl-2-[(4-methylpiperazin-1-yl)methyl]benzimidazole