Problem statement: Answer the multiple choice question.
Query: Which compound has a 4.369\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
[a] CC(=O)c1ccc([C@H]2C[C@@]34CN(C(=O)OC(C)(C)C)S(=O)(=O)[C@H]3C[C@H]2O4)cc1
[b] CCCCN1CCNC1=S
[c] CC(=O)N1CCOc2ccc(S(=O)(=O)NCCc3ccc(C)cc3)cc21
[d] O=C(Nc1cccc2ncccc12)c1cc([N+](=O)[O-])ccc1Cl
[e] C=CCn1c(SCC(=O)Nc2ccc3c(c2)CCC3)nnc1-c1cccs1
Answer: b. CCCCN1CCNC1=S
{#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#}
CCCCN1CCNC1=S
CCCCN1CCNC1=S
1-butylimidazolidine-2-thione