Task: Answer the multiple choice question.
Question: Which compound exhibits a 8.726\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a: Cc1c(Cl)cccc1NC(=O)COC(=O)CCc1nc2ccccc2n1-c1ccccc1
b: Nc1nnc(-c2ccc(Cl)cc2)o1
c: COc1cc(SC)ccc1C(=O)OCC(=O)N1CCCC1
d: Cn1c(C(=O)NC2CCCCC2)cc2c(=O)n3ccccc3nc21
Answer: b. Nc1nnc(-c2ccc(Cl)cc2)o1
{#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(-c2ccc(Cl)cc2)o1
Nc1nnc(-c2ccc(Cl)cc2)o1
5-(4-chlorophenyl)-1,3,4-oxadiazol-2-amine