Task: Answer the MCQ question.
Question: Which drug has a 2.563\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
a: CCOC(=O)c1nnc(-c2ccccc2)nc1N1CC(C)OC(C)C1
b: CCN1CCC(NCC2CCCCC2)CC1
c: Cc1cccc(C)c1NC(=O)Cn1c(CN2CCCCC2)nc2ccccc2c1=O
d: O=C(NC(=S)Nc1ccccc1)c1ccc(Br)o1
e: Nc1nc(Nc2ccc(Cl)cc2Cl)nc(C(F)(F)F)n1
Answer: a. CCOC(=O)c1nnc(-c2ccccc2)nc1N1CC(C)OC(C)C1
{#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)c1nnc(-c2ccccc2)nc1N1CC(C)OC(C)C1
CCOC(=O)c1nnc(-c2ccccc2)nc1N1CC(C)OC(C)C1
ethyl 5-(2,6-dimethylmorpholin-4-yl)-3-phenyl-1,2,4-triazine-6-carboxylate