Task: Answer the multiple choice question.
Query: Which drug exhibits a 2.545\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] CN(Cc1cnc2nc(N)nc(N)c2n1)c1ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)O)cc1
[b] ClCCSc1nnc(-c2cccnc2)o1
Answer: b. ClCCSc1nnc(-c2cccnc2)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#}
ClCCSc1nnc(-c2cccnc2)o1
ClCCSc1nnc(-c2cccnc2)o1
2-(2-chloroethylsulfanyl)-5-pyridin-3-yl-1,3,4-oxadiazole