Problem statement: Answer the multiple-choice question.
Query: Which compound has a 1.873\% 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. CCc1c(C)nc(SC/C=C/c2ccccc2)[nH]c1=O
b. N#Cc1cc2c(nc1SCC(=O)Nc1sc3c(c1C#N)CCC3)CCCC2
c. CCOC(=O)N1CCN(C(c2ccc(Cl)cc2)c2sc3nc(C)nn3c2O)CC1
d. COc1ccc(-c2nnc(SC(C)C(=O)Nc3c(C)n(C)n(-c4ccccc4)c3=O)o2)cc1
Answer: a. CCc1c(C)nc(SC/C=C/c2ccccc2)[nH]c1=O
{#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#}
CCc1c(C)nc(SC/C=C/c2ccccc2)[nH]c1=O
CCc1c(C)nc(SC/C=C/c2ccccc2)[nH]c1=O
5-ethyl-4-methyl-2-[(E)-3-phenylprop-2-enyl]sulfanyl-1H-pyrimidin-6-one