Problem statement: Answer the multiple-choice question.
Query: Which drug has a 21.398\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
a: O=C(NCCCN1CCOCC1)c1cc(-c2ccc(F)cc2)nc2ccccc12
b: CCCCNC(C(=O)Nc1ccc(Cl)c([N+](=O)[O-])c1)c1ccccc1.O=C(O)C(=O)O
c: CCN1C(=O)N[C@@H](c2cccc(F)c2)C(C(C)=O)=C1C
Answer: c. CCN1C(=O)N[C@@H](c2cccc(F)c2)C(C(C)=O)=C1C
{#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#}
CCN1C(=O)N[C@@H](c2cccc(F)c2)C(C(C)=O)=C1C
CCN1C(=O)N[C@@H](c2cccc(F)c2)C(C(C)=O)=C1C
(6S)-5-acetyl-3-ethyl-6-(3-fluorophenyl)-4-methyl-1,6-dihydropyrimidin-2-one