Problem statement: Answer the MCQ question.
Query: Which drug has a -2.398\% 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. CCOc1ccc(C(=O)CCC(=O)O)cc1
b. COc1ccc2oc(=N)c(C(=O)Nc3ccc(C)cc3)cc2c1
c. O=C(N/N=C/c1ccncc1)C1CC1C(=O)N/N=C/c1ccncc1
d. CN(C)S(=O)(=O)c1ccc(NC(=O)c2cccnc2)cc1
Answer: a. CCOc1ccc(C(=O)CCC(=O)O)cc1
{#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#}
4-(4-ethoxyphenyl)-4-oxobutanoic acid