Task: Answer the multiple choice question.
Question: Which compound exhibits a -1.887\% 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. CCOC(=O)c1c(C)nc(-c2ccccc2)nc1NC(C)=O
b. O=C(O)c1sccc1S(=O)(=O)N1CCOCC1
c. CCOC(=O)c1cc2cc([N+](=O)[O-])cc(OC)c2oc1=O
Answer: a. CCOC(=O)c1c(C)nc(-c2ccccc2)nc1NC(C)=O
{#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)c1c(C)nc(-c2ccccc2)nc1NC(C)=O
CCOC(=O)c1c(C)nc(-c2ccccc2)nc1NC(C)=O
ethyl 4-acetamido-6-methyl-2-phenylpyrimidine-5-carboxylate