Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 13.997\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. O=C1CSC(=S)N1c1ccc(O)cc1
b. COc1ccc(C(=O)COC(=O)CCc2nc3ccccc3[nH]c2=O)cc1Br
Answer: a. O=C1CSC(=S)N1c1ccc(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#}
O=C1CSC(=S)N1c1ccc(O)cc1
O=C1CSC(=S)N1c1ccc(O)cc1
3-(4-hydroxyphenyl)-2-sulfanylidene-1,3-thiazolidin-4-one