Task: Answer the multiple-choice question.
Question: Which compound exhibits a 13.649\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] c1ccn2cc(CSc3nnc4ccccn34)nc2c1
[b] O=c1c2ccccc2ncn1CCCCOc1cccc(Br)c1
[c] COc1cc(N=c2ssnc2Cl)cc(OC)c1OC
[d] CCCCC(=O)NCc1ccc(F)cc1
Answer: a. c1ccn2cc(CSc3nnc4ccccn34)nc2c1
{#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#}
c1ccn2cc(CSc3nnc4ccccn34)nc2c1
c1ccn2cc(CSc3nnc4ccccn34)nc2c1
3-(imidazo[1,2-a]pyridin-2-ylmethylsulfanyl)-[1,2,4]triazolo[4,3-a]pyridine