Task: Answer the multiple choice question.
Question: Which drug exhibits a 8.273\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a. Cc1ccnc(N2CCC(C(=O)NNC(=O)c3ccncc3)CC2)n1
b. O=S(=O)(O)c1nc2ccccc2[nH]1
c. CCS(=O)(=O)c1c([N+](=O)[O-])ncn1C
d. Cc1ccc(S(=O)(=O)CCC(=O)OCC(=O)Nc2ncc(Cl)cc2Cl)cc1
e. CCCNc1nc(C)cc(-c2cc(-c3ccc(Cl)cc3)on2)n1
Answer: b. O=S(=O)(O)c1nc2ccccc2[nH]1
{#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=S(=O)(O)c1nc2ccccc2[nH]1
O=S(=O)(O)c1nc2ccccc2[nH]1
1H-benzimidazole-2-sulfonic acid