Task: Answer the multiple choice question.
Question: Which compound exhibits a 19.022\% 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 additional words.
Options:
a CSc1ccccc1NC(=O)c1cnccn1
b COc1cccc(/C=C2\SC(=O)N(CCC(=O)NC3CCS(=O)(=O)C3)C2=O)c1
c Cc1c(O)ccc2c(=O)c(-c3nncn3-c3ccccc3)coc12
d CC(=O)Nc1nnc(-c2ccc(Cl)s2)o1
Answer: a. CSc1ccccc1NC(=O)c1cnccn1
{#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#}
CSc1ccccc1NC(=O)c1cnccn1
CSc1ccccc1NC(=O)c1cnccn1
N-(2-methylsulfanylphenyl)pyrazine-2-carboxamide