Task: Answer the multiple-choice question.
Question: Which compound exhibits a -1.815\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] Cc1cccc2cc(CN(CCCO)C(=O)Nc3ccccc3Cl)c(=O)[nH]c12
[b] COc1ccc(NC(=O)COc2ccc(C(=O)NCc3cccnc3)cc2OC)cc1
[c] COc1ccccc1CNC(=O)CN(C)S(=O)(=O)c1ccc(Br)s1
[d] CCCCN(c1ccccc1)c1ncnc2nc[nH]c12
Answer: d. CCCCN(c1ccccc1)c1ncnc2nc[nH]c12
{#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#}
CCCCN(c1ccccc1)c1ncnc2nc[nH]c12
CCCCN(c1ccccc1)c1ncnc2nc[nH]c12
N-butyl-N-phenyl-7H-purin-6-amine