Task: Answer the multiple choice question.
Question: Which drug has a 4.363\% 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 additional words.
Options:
(a) O=C(/C=C/c1ccco1)NC1=NCCS1
(b) O=C(OCN1C(=O)c2ccccc2C1=O)c1ccco1
(c) CN(C)CCCCCCCCCCC(=O)/C=N/O.Cl
(d) Cc1cc(=O)[nH]c(N/N=C/c2ccc(-c3ccc([N+](=O)[O-])cc3)o2)n1
Answer: b. O=C(OCN1C(=O)c2ccccc2C1=O)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#}
O=C(OCN1C(=O)c2ccccc2C1=O)c1ccco1
O=C(OCN1C(=O)c2ccccc2C1=O)c1ccco1
(1,3-dioxoisoindol-2-yl)methyl furan-2-carboxylate