Task: Answer the MCQ question.
Question: Which drug exhibits a 5.045\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CC1CCCN(C(=O)c2cccc(S(=O)(=O)N3CCCc4ccccc43)c2)C1
(b) Nc1nc(NCCCN2CCOCC2)nc(Nc2ccccc2)c1[N+](=O)[O-]
Answer: b. Nc1nc(NCCCN2CCOCC2)nc(Nc2ccccc2)c1[N+](=O)[O-]
{#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#}
Nc1nc(NCCCN2CCOCC2)nc(Nc2ccccc2)c1[N+](=O)[O-]
Nc1nc(NCCCN2CCOCC2)nc(Nc2ccccc2)c1[N+](=O)[O-]
2-N-(3-morpholin-4-ylpropyl)-5-nitro-4-N-phenylpyrimidine-2,4,6-triamine