Task: Answer the MCQ question.
Question: Which drug exhibits a -76.969\% 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, or c without using any other words.
Options:
a. CCCCn1c(SCC(=O)c2ccc(OC)cc2OC)nc2cc(S(N)(=O)=O)ccc21
b. O=C(c1cccs1)n1nc(-c2ccc(Cl)cc2)nc1NCc1ccco1
c. CCCCCn1c(N2CCN(Cc3ccccc3)CC2)nc2c1c(=O)[nH]c(=O)n2C
Answer: c. CCCCCn1c(N2CCN(Cc3ccccc3)CC2)nc2c1c(=O)[nH]c(=O)n2C
{#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#}
8-(4-benzylpiperazin-1-yl)-3-methyl-7-pentylpurine-2,6-dione