Task: Answer the multiple-choice question.
Question: Which compound exhibits a 9.954\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] CCOC(=O)N1CCC2(CC1)C(C#N)=C(N)OC1=C2C(=O)CCC1
[b] COc1ccc(N=C2C(=O)N3c4c(cccc42)C(C)=CC3(C)C)cc1
[c] COc1ccc(OC)c(S(=O)(=O)N2CCN(c3ccc(F)cc3)CC2)c1
[d] Cc1cccc(NC(=O)CSc2nc3c(oc4ccccc43)c(=O)n2-c2ccccc2)c1
Answer: a. CCOC(=O)N1CCC2(CC1)C(C#N)=C(N)OC1=C2C(=O)CCC1
{#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#}
CCOC(=O)N1CCC2(CC1)C(C#N)=C(N)OC1=C2C(=O)CCC1
CCOC(=O)N1CCC2(CC1)C(C#N)=C(N)OC1=C2C(=O)CCC1
ethyl 2-amino-3-cyano-5-oxospiro[7,8-dihydro-6H-chromene-4,4'-piperidine]-1'-carboxylate