Problem statement: Answer the multiple choice question.
Query: Which drug has a -4.955\% human ether-à-go-go related gene (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=C1OCCC1Sc1ncnc2sccc12
b: Cc1cc2ncn(C3CC(=O)N(C)C3=O)c2cc1C
Answer: a. O=C1OCCC1Sc1ncnc2sccc12
{#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=C1OCCC1Sc1ncnc2sccc12
O=C1OCCC1Sc1ncnc2sccc12
3-thieno[2,3-d]pyrimidin-4-ylsulfanyloxolan-2-one