Task: Answer the MCQ question.
Query: Which drug exhibits a 1.921\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a.) CCCCn1c(SCC(=O)c2ccc3c(c2)OCCO3)nnc1-c1ccco1
b.) CCOCCCNC(=O)C1CCN(S(=O)(=O)N2CCCC2)CC1
Answer: a. CCCCn1c(SCC(=O)c2ccc3c(c2)OCCO3)nnc1-c1ccco1
{#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#}
CCCCn1c(SCC(=O)c2ccc3c(c2)OCCO3)nnc1-c1ccco1
CCCCn1c(SCC(=O)c2ccc3c(c2)OCCO3)nnc1-c1ccco1
2-[[4-butyl-5-(furan-2-yl)-1,2,4-triazol-3-yl]sulfanyl]-1-(2,3-dihydro-1,4-benzodioxin-6-yl)ethanone