Task: Answer the MCQ question.
Question: Which drug exhibits a 5.398\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a O=C1c2ccccc2C(=O)N1CCOc1ccccc1Cl
b CCC(C)N1CCN(S(=O)(=O)Cc2ccccc2)CC1
c CC1CC(C)CN(C(=O)COC(=O)CNS(=O)(=O)/C=C/c2ccccc2)C1
d O=C(N/N=C/c1cccnc1)c1cc(Br)ccc1O
Answer: a. O=C1c2ccccc2C(=O)N1CCOc1ccccc1Cl
{#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=C1c2ccccc2C(=O)N1CCOc1ccccc1Cl
O=C1c2ccccc2C(=O)N1CCOc1ccccc1Cl
2-[2-(2-chlorophenoxy)ethyl]isoindole-1,3-dione