Task: Answer the MCQ question.
Question: Which compound exhibits a 5.021\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) Nc1[nH]ncc1C(=O)Nc1cccc(C(F)(F)F)c1
(b) O=S(=O)(/N=C(\[O-])C[n+]1ccccc1)c1ccc(Cl)cc1
(c) CCOC(=O)C1CCCN(C(=O)c2cn(-c3ccccc3)nc2-c2cccnc2)C1
(d) COC(=O)C1CCCN1C(=O)C1CCCN1C(=O)CNC(=O)OCc1ccccc1
Answer: b. O=S(=O)(/N=C(\[O-])C[n+]1ccccc1)c1ccc(Cl)cc1
{#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)(/N=C(\[O-])C[n+]1ccccc1)c1ccc(Cl)cc1
O=S(=O)(/N=C(\[O-])C[n+]1ccccc1)c1ccc(Cl)cc1
(1Z)-N-(4-chlorophenyl)sulfonyl-2-pyridin-1-ium-1-ylethanimidate