Task: Answer the multiple-choice question.
Question: Which compound has a 21.491\% 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) C=CCNC(=S)/C(=C(/[O-])c1ccc([N+](=O)[O-])cc1)[n+]1ccccc1
(b) CCOCCCNC(=O)C(NC(=O)c1cnccn1)c1ccc(C)cc1
Answer: b. CCOCCCNC(=O)C(NC(=O)c1cnccn1)c1ccc(C)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#}
CCOCCCNC(=O)C(NC(=O)c1cnccn1)c1ccc(C)cc1
CCOCCCNC(=O)C(NC(=O)c1cnccn1)c1ccc(C)cc1
N-[2-(3-ethoxypropylamino)-1-(4-methylphenyl)-2-oxoethyl]pyrazine-2-carboxamide