Task: Answer the MCQ question.
Query: Which compound has a -1.490\% 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] COc1ccccc1OCCSc1nc2ccccc2n1CC(O)CO
[b] C[C@@H]1C[C@H](O)c2cc(Cl)ccc2N1
Answer: b. C[C@@H]1C[C@H](O)c2cc(Cl)ccc2N1
{#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#}
C[C@@H]1C[C@H](O)c2cc(Cl)ccc2N1
C[C@@H]1C[C@H](O)c2cc(Cl)ccc2N1
(2R,4S)-6-chloro-2-methyl-1,2,3,4-tetrahydroquinolin-4-ol