Problem statement: Answer the MCQ question.
Query: Which compound has a 2.255\% human ether-à-go-go related gene (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.) O=C1NC(=Nc2ccccc2Cl)S/C1=C\c1cc([N+](=O)[O-])ccc1O
b.) CC(C)(C)c1cc(CCC(=O)NCc2cccnc2)cc(C(C)(C)C)c1O
Answer: a. O=C1NC(=Nc2ccccc2Cl)S/C1=C\c1cc([N+](=O)[O-])ccc1O
{#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=C1NC(=Nc2ccccc2Cl)S/C1=C\c1cc([N+](=O)[O-])ccc1O
O=C1NC(=Nc2ccccc2Cl)S/C1=C\c1cc([N+](=O)[O-])ccc1O
(5Z)-2-(2-chlorophenyl)imino-5-[(2-hydroxy-5-nitrophenyl)methylidene]-1,3-thiazolidin-4-one