Problem statement: Answer the multiple choice question.
Question: Which compound exhibits a 0.407\% 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] S=c1[nH]nc(Cc2c[nH]c3ccccc23)o1
[b] CCc1cc2c(=O)[nH]c(Cc3ccc(OC)cc3)nc2s1
Answer: a. S=c1[nH]nc(Cc2c[nH]c3ccccc23)o1
{#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#}
S=c1[nH]nc(Cc2c[nH]c3ccccc23)o1
S=c1[nH]nc(Cc2c[nH]c3ccccc23)o1
[S][=C][NH1][N][=C][Branch1][#C][C][C][=C][NH1][C][=C][C][=C][C][=C][Ring1][=Branch2][Ring1][=Branch1][O][Ring1][#C]
5-(1H-indol-3-ylmethyl)-3H-1,3,4-oxadiazole-2-thione