Problem statement: Answer the multiple choice question.
Query: Which drug exhibits a -0.194\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) CCCCN(C)C(=O)c1cc2cc3cc(OC)ccc3nc2o1
(b) CC(=O)Nc1ccc(SC[C@H](Cc2ccccc2)N2CC[C@@H](C)CCC2=O)cc1
(c) CCOC(=O)c1cc(-c2ccccc2C)nn1CC1CC(c2ccc(OC)cc2)=NO1
Answer: a. CCCCN(C)C(=O)c1cc2cc3cc(OC)ccc3nc2o1
{#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#}
CCCCN(C)C(=O)c1cc2cc3cc(OC)ccc3nc2o1
CCCCN(C)C(=O)c1cc2cc3cc(OC)ccc3nc2o1
N-butyl-6-methoxy-N-methylfuro[2,3-b]quinoline-2-carboxamide