Task: Answer the multiple choice question.
Query: Which drug has a 9.155\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] COC(C(=O)NNC(=O)CCc1ccccc1)c1ccccc1
[b] CCOc1ccccc1N(CC(=O)Nc1ccc2c(c1)OCO2)S(C)(=O)=O
Answer: a. COC(C(=O)NNC(=O)CCc1ccccc1)c1ccccc1
{#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#}
COC(C(=O)NNC(=O)CCc1ccccc1)c1ccccc1
COC(C(=O)NNC(=O)CCc1ccccc1)c1ccccc1
N'-(2-methoxy-2-phenylacetyl)-3-phenylpropanehydrazide