Task: Answer the multiple-choice question.
Question: Which compound has a -3.994\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a O=C(Nc1ccccc1)N(CCCN1CCOCC1)Cc1ccccc1F
b Cc1ccc2nc(SCC(=O)N(CC(C)C)c3c(N)n(CC(C)C)c(=O)[nH]c3=O)[nH]c2c1
Answer: a. O=C(Nc1ccccc1)N(CCCN1CCOCC1)Cc1ccccc1F
{#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(Nc1ccccc1)N(CCCN1CCOCC1)Cc1ccccc1F
O=C(Nc1ccccc1)N(CCCN1CCOCC1)Cc1ccccc1F
1-[(2-fluorophenyl)methyl]-1-(3-morpholin-4-ylpropyl)-3-phenylurea