Task: Answer the MCQ question.
Query: Which drug exhibits a 4.248\% 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) COC12C(COC(N)=O)C3=C(C(=O)C(C)=C(N)C3=O)N1CC1C2N1C
(b) Cc1ccc(NC(CNS(=O)(=O)c2ccc(Cl)cc2)c2ccccc2)cc1
Answer: a. COC12C(COC(N)=O)C3=C(C(=O)C(C)=C(N)C3=O)N1CC1C2N1C
{#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#}
COC12C(COC(N)=O)C3=C(C(=O)C(C)=C(N)C3=O)N1CC1C2N1C
COC12C(COC(N)=O)C3=C(C(=O)C(C)=C(N)C3=O)N1CC1C2N1C
(11-amino-7-methoxy-5,12-dimethyl-10,13-dioxo-2,5-diazatetracyclo[7.4.0.02,7.04,6]trideca-1(9),11-dien-8-yl)methyl carbamate