Problem statement: Answer the multiple-choice question.
Query: Which compound exhibits a 12.889\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a: CC1([N+](=O)[O-])COC2(OC1)C(=O)Nc1ccccc12
b: CCCCNC(=O)COC(=O)C1CCN(S(=O)(=O)c2ccc3c(c2)OCCO3)CC1
c: COc1cccc(CNC(=O)CCc2nnc(C3CCCCC3)o2)c1
d: O=c1[nH]c(=O)n(-c2ccccc2)c2c1C(C(F)(F)F)(C(F)(F)F)N=C(CCC1CCCCC1)N2
e: Cc1c(C(=O)NC2CC(=O)N(c3ccc4c(c3)OCCO4)C2)cccc1[N+](=O)[O-]
Answer: a. CC1([N+](=O)[O-])COC2(OC1)C(=O)Nc1ccccc12
{#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#}
CC1([N+](=O)[O-])COC2(OC1)C(=O)Nc1ccccc12
CC1([N+](=O)[O-])COC2(OC1)C(=O)Nc1ccccc12
5-methyl-5-nitrospiro[1,3-dioxane-2,3'-1H-indole]-2'-one