Task: Answer the multiple-choice question.
Query: Which drug exhibits a 4.043\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a.) Nc1nnc(N2CCCCC2)s1
b.) Cc1cccc(C)c1NC(=O)COC(=O)C1Cc2ccccc2CN1C(=O)c1ccccc1
c.) Cc1onc(-c2c(F)cccc2Cl)c1C(=O)Nc1ccccc1N1CCOCC1
d.) COc1cc(C(=O)OCC#N)ccc1OCc1c(C)noc1C
Answer: a. Nc1nnc(N2CCCCC2)s1
{#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#}
Nc1nnc(N2CCCCC2)s1
Nc1nnc(N2CCCCC2)s1
5-piperidin-1-yl-1,3,4-thiadiazol-2-amine