Problem statement: Answer the MCQ question.
Query: Which drug exhibits a 21.242\% 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) Cc1ccc2nc(/C(C#N)=C\c3cc(O)ccc3[N+](=O)[O-])[nH]c2c1
(b) O=C(CSC(=S)N1CCCC1)Nc1ncc(Cl)cc1Cl
Answer: a. Cc1ccc2nc(/C(C#N)=C\c3cc(O)ccc3[N+](=O)[O-])[nH]c2c1
{#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#}
Cc1ccc2nc(/C(C#N)=C\c3cc(O)ccc3[N+](=O)[O-])[nH]c2c1
Cc1ccc2nc(/C(C#N)=C\c3cc(O)ccc3[N+](=O)[O-])[nH]c2c1
(Z)-3-(5-hydroxy-2-nitrophenyl)-2-(6-methyl-1H-benzimidazol-2-yl)prop-2-enenitrile