Problem statement: Answer the multiple choice question.
Question: Which compound exhibits a 1.766\% 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 O=C(CNCCC1=CCCCC1)Nc1ccccc1N1CCCCC1.O=C(O)C(=O)O
b O=C(Nc1cccnc1)C12CC3CC(CC(C3)C1)C2
c COc1ccc(Cl)cc1NC(=O)C[n+]1cccc(C)c1.[Cl-]
d C=CCNC(=S)NNC(=O)c1ccc(OCCCC)cc1
Answer: b. O=C(Nc1cccnc1)C12CC3CC(CC(C3)C1)C2
{#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(Nc1cccnc1)C12CC3CC(CC(C3)C1)C2
O=C(Nc1cccnc1)C12CC3CC(CC(C3)C1)C2
N-pyridin-3-yladamantane-1-carboxamide