Task: Answer the multiple choice question.
Query: Which compound has a 0.258\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CCOC(=O)N1CCN(C(=O)CCc2c(C)nc3nc(C)nn3c2C)CC1
(b) CCOC(=O)C1CCCN(C(=O)c2ccc(C)c(S(=O)(=O)N3CCCCC3)c2)C1
Answer: a. CCOC(=O)N1CCN(C(=O)CCc2c(C)nc3nc(C)nn3c2C)CC1
{#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#}
CCOC(=O)N1CCN(C(=O)CCc2c(C)nc3nc(C)nn3c2C)CC1
CCOC(=O)N1CCN(C(=O)CCc2c(C)nc3nc(C)nn3c2C)CC1
ethyl 4-[3-(2,5,7-trimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)propanoyl]piperazine-1-carboxylate