Task: Answer the multiple choice question.
Question: Which compound has a 8.427\% 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, d, or e without using any additional words.
Options:
a CCSC1(SCC)N=C(N)C2(C#N)C(c3ccccc3)NC3=C(CCC3)C12C#N
b CC1CCN(CCNC(=O)CCS(=O)(=O)c2ccc(Br)cc2)CC1
c Cn1c(=O)[nH]c(=O)c2[nH]c(CN3CCN(Cc4ccccc4)CC3)nc21
d O=C(O)/C=C\C(=O)NCc1ccccc1
e CCCCCCn1c(SCC(=O)Nc2cc(C)on2)nc2ccccc2c1=O
Answer: c. Cn1c(=O)[nH]c(=O)c2[nH]c(CN3CCN(Cc4ccccc4)CC3)nc21
{#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#}
Cn1c(=O)[nH]c(=O)c2[nH]c(CN3CCN(Cc4ccccc4)CC3)nc21
Cn1c(=O)[nH]c(=O)c2[nH]c(CN3CCN(Cc4ccccc4)CC3)nc21
[C][N][C][=Branch1][C][=O][NH1][C][=Branch1][C][=O][C][NH1][C][Branch2][Ring1][Branch1][C][N][C][C][N][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][Ring1][=N][=N][C][=Ring2][Ring1][Ring1][Ring2][Ring1][=Branch2]
8-[(4-benzylpiperazin-1-yl)methyl]-3-methyl-7H-purine-2,6-dione