Task: Answer the MCQ question.
Query: Which compound has a -33.138\% 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) CCOC(=O)c1[nH]c2ccccc2c1N=CN(CC)CC
(b) Cc1ccnc(NC(=O)C(Cc2ccccc2)NC(=O)c2ccccc2)c1
Answer: a. CCOC(=O)c1[nH]c2ccccc2c1N=CN(CC)CC
{#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)c1[nH]c2ccccc2c1N=CN(CC)CC
CCOC(=O)c1[nH]c2ccccc2c1N=CN(CC)CC
ethyl 3-(diethylaminomethylideneamino)-1H-indole-2-carboxylate