Problem statement: Answer the multiple-choice question.
Query: Which drug has a 21.183\% 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 other words.
Options:
a. CC1CCN(C(=O)CC(NC(=O)c2ccccc2Cl)c2ccccc2)CC1
b. CCCc1ncc(C(O)c2ccccc2OC)n1C
c. O=C(N/N=C/c1ccccc1)c1cc[n+]([O-])cc1
d. COc1ccc(N2CCN(C(=O)C3CCCN(c4ncnc5c4nc4n5CCCCC4)C3)CC2)cc1
Answer: c. O=C(N/N=C/c1ccccc1)c1cc[n+]([O-])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=C(N/N=C/c1ccccc1)c1cc[n+]([O-])cc1
O=C(N/N=C/c1ccccc1)c1cc[n+]([O-])cc1
N-[(E)-benzylideneamino]-1-oxidopyridin-1-ium-4-carboxamide