Task: Answer the multiple-choice question.
Question: Which compound exhibits a 21.959\% 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 additional words.
Options:
a: CCCCCCC(=O)N/N=C/Cc1ccccc1
b: CN(C)C(=S)Nc1ccc(Cl)cc1
Answer: b. CN(C)C(=S)Nc1ccc(Cl)cc1
{#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#}
CN(C)C(=S)Nc1ccc(Cl)cc1
CN(C)C(=S)Nc1ccc(Cl)cc1
[C][N][Branch1][C][C][C][=Branch1][C][=S][N][C][=C][C][=C][Branch1][C][Cl][C][=C][Ring1][#Branch1]
3-(4-chlorophenyl)-1,1-dimethylthiourea