Task: Answer the multiple choice question.
Question: Which drug exhibits a 2.461\% 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 other words.
Options:
[a] O=C(O)CCC(=O)OCC1CCCO1
[b] CN(C1CCCCC1)S(=O)(=O)c1cccc(C#N)c1
[c] O=C(O)CCCC(=O)NCc1c(Cl)cccc1Sc1ccc(Cl)cc1
[d] CN(C)c1ccc(/C=N/NC(=O)CSc2ccccn2)cc1
[e] CC(Oc1ccccc1)C(=O)N/N=C/c1ccccn1
Answer: a. O=C(O)CCC(=O)OCC1CCCO1
{#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#}
O=C(O)CCC(=O)OCC1CCCO1
O=C(O)CCC(=O)OCC1CCCO1
4-oxo-4-(oxolan-2-ylmethoxy)butanoic acid