Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a 2.865\% 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) O=C1OCCC1Sc1nc2cc(Cl)ccc2s1
(b) COCc1c(C(=O)OCC(=O)c2c(N)n(CC(C)C)c(=O)n(C)c2=O)oc2ccccc12
Answer: a. O=C1OCCC1Sc1nc2cc(Cl)ccc2s1
{#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=C1OCCC1Sc1nc2cc(Cl)ccc2s1
O=C1OCCC1Sc1nc2cc(Cl)ccc2s1
3-[(5-chloro-1,3-benzothiazol-2-yl)sulfanyl]oxolan-2-one