Problem statement: Answer the MCQ question.
Question: Which compound exhibits a 5.380\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
[a] COc1ccc(OC)c2nc(-c3ccc4c(c3)OCO4)ccc12
[b] CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
[c] C/C(=N\NC(=O)c1nnn(-c2nonc2N)c1-c1ccc2c(c1)OCO2)c1ccc(F)cc1
[d] CCOc1ccc(CCNC(=O)COC(=O)CCc2cc(OC)c(OC)c(OC)c2)cc1OCC
[e] Cc1nnsc1C(=O)NC(=O)Nc1ccc(F)c(Cl)c1
Answer: b. CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
{#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#}
CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
CCCCn1nc(-c2ccccc2)c2nc3ccccc3nc21
1-butyl-3-phenylpyrazolo[4,3-b]quinoxaline