Problem statement: Answer the MCQ question.
Question: Which drug has a 13.778\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a COC(=O)c1c(C)noc1-c1cc(C)on1
b O=C1CSC(c2cccnc2)N1c1ccc(Cl)cc1
Answer: a. COC(=O)c1c(C)noc1-c1cc(C)on1
{#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#}
COC(=O)c1c(C)noc1-c1cc(C)on1
COC(=O)c1c(C)noc1-c1cc(C)on1
methyl 3-methyl-5-(5-methyl-1,2-oxazol-3-yl)-1,2-oxazole-4-carboxylate