Problem statement: Answer the multiple choice question.
Query: Which drug has a 2.757\% 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/N=C1/CCCSc2ccccc21
b: CC(C)c1ccc(CNC(=O)C2CCCN2S(=O)(=O)c2ccccc2)cc1
c: Cc1ccccc1NC(=O)Cc1nc(COC(=O)c2ccc(Cl)nc2)cs1
Answer: a. O/N=C1/CCCSc2ccccc21
{#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/N=C1/CCCSc2ccccc21
O/N=C1/CCCSc2ccccc21
(NZ)-N-(3,4-dihydro-2H-1-benzothiepin-5-ylidene)hydroxylamine