Task: Answer the multiple-choice question.
Question: Which drug exhibits a -19.739% hERG inhibition at a concentration of 10uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: OC(CNCc1ccccc1F)COc1cccc2ccccc12
b: CCCCCC(=O)Nc1ccc(N2CCOCC2)c(S(=O)(=O)Nc2ccc(OC)cc2)c1
Answer: a. OC(CNCc1ccccc1F)COc1cccc2ccccc12
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_10uM#}{herg_central_at_10uM__units} {herg_central_at_10uM__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_10uM%}
Answer: {%multiple_choice_result}. {SMILES#}
OC(CNCc1ccccc1F)COc1cccc2ccccc12
OC(CNCc1ccccc1F)COc1cccc2ccccc12
1-[(2-fluorophenyl)methylamino]-3-naphthalen-1-yloxypropan-2-ol