Task: Answer the MCQ question.
Question: Which drug has a 6.190\% 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 Cc1cc(NC(=O)C2CC2)ncc1NC(=O)C12CC3CC(CC(C3)C1)C2
b C1N2CN3CN1CN(C2)C3
c O=C(CSc1nnc(CNC(=O)c2cccs2)o1)NCC1CCCO1
Answer: b. C1N2CN3CN1CN(C2)C3
{#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#}
1,3,5,7-tetrazatricyclo[3.3.1.13,7]decane