Problem statement: Answer the multiple choice question.
Question: Which drug has a 20.868\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: CC(C)CCNC(=O)c1ccc2c(c1)N(C)C(=O)c1ccccc1S2
b: O=c1c[n+]([O-])c2ccccc2n1OCc1ccccn1
c: Cc1cc(S(=O)(=O)NCCc2ccccc2)c(C)s1
Answer: b. O=c1c[n+]([O-])c2ccccc2n1OCc1ccccn1
{#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=c1c[n+]([O-])c2ccccc2n1OCc1ccccn1
O=c1c[n+]([O-])c2ccccc2n1OCc1ccccn1
[O][=C][C][=N+1][Branch1][C][O-1][C][=C][C][=C][C][=C][Ring1][=Branch1][N][Ring1][O][O][C][C][=C][C][=C][C][=N][Ring1][=Branch1]
4-oxido-1-(pyridin-2-ylmethoxy)quinoxalin-4-ium-2-one