Task: Answer the multiple-choice question.
Query: Which drug has a 9.948\% 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] COC(=O)CN1C(=O)N(c2ccccc2)C(N(O)C(=O)Nc2ccccc2)C1(C)C
[b] CCNC(=O)N1CCNC(=O)C1CC(=O)OC
Answer: b. CCNC(=O)N1CCNC(=O)C1CC(=O)OC
{#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#}
CCNC(=O)N1CCNC(=O)C1CC(=O)OC
CCNC(=O)N1CCNC(=O)C1CC(=O)OC
methyl2-[1-(ethylcarbamoyl)-3-oxopiperazin-2-yl]acetate