Task: Answer the MCQ question.
Question: Which drug exhibits a 26.637% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any other words.
Options:
a. O=C(O)c1cc2c(cc1Cl)N1CCCCCC1=NS2(=O)=O
b. O=C(NCc1ccccn1)Nc1ccccc1
c. Cc1nn(-c2ccc([N+](=O)[O-])cc2)c2c1C(c1cccc(Br)c1)N1C(=N2)C(=O)Nc2ccccc21
d. CN(CC(=O)NC(=O)NCc1ccco1)Cc1nc2ccccc2c(=O)[nH]1
e. Cc1ccc(C)c(Nc2nc3ccc(C)cc3n3cnnc23)c1
Answer: b. O=C(NCc1ccccn1)Nc1ccccc1
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
O=C(NCc1ccccn1)Nc1ccccc1
O=C(NCc1ccccn1)Nc1ccccc1
1-phenyl-3-(pyridin-2-ylmethyl)urea