Task: Answer the multiple choice question.
Query: Which compound exhibits a 19.314\% 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) O=C(O)C1CC=CCC1C(=O)NCc1ccc(Cl)cc1
(b) C[C@@H](O)Cc1cn(CC(=O)NCCCCCCCCCCC(=O)N2CCNCC2)nn1
Answer: a. O=C(O)C1CC=CCC1C(=O)NCc1ccc(Cl)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#}
O=C(O)C1CC=CCC1C(=O)NCc1ccc(Cl)cc1
O=C(O)C1CC=CCC1C(=O)NCc1ccc(Cl)cc1
6-[(4-chlorophenyl)methylcarbamoyl]cyclohex-3-ene-1-carboxylic acid