Task: Answer the multiple-choice question.
Query: Which compound exhibits a -21.557\% 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 other words.
Options:
a: Oc1ccccc1-n1c(-c2ccccc2)ccc1-c1ccccc1
b: CCOc1ccc(CCNC(=O)CCS(=O)(=O)c2ccc(OC)cc2)cc1OCC
c: CC(C)C(=O)NC(NC(=S)Nc1ccc(S(N)(=O)=O)cc1)C(Cl)(Cl)Cl
d: CC1CCN(CCOCCOc2ccccc2-c2ccccc2)CC1
Answer: d. CC1CCN(CCOCCOc2ccccc2-c2ccccc2)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#}
CC1CCN(CCOCCOc2ccccc2-c2ccccc2)CC1
CC1CCN(CCOCCOc2ccccc2-c2ccccc2)CC1
4-methyl-1-[2-[2-(2-phenylphenoxy)ethoxy]ethyl]piperidine