Task: Answer the MCQ question.
Query: Which compound has a 2.513\% 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 or b without using any additional words.
Options:
(a) CCCCn1c(O)c(C(C)=NCCCN(CC)CC)c(=O)[nH]c1=O
(b) Cl.O=C(c1cc2ccccc2o1)N1CCN(Cc2ccccc2)CC1
Answer: a. CCCCn1c(O)c(C(C)=NCCCN(CC)CC)c(=O)[nH]c1=O
{#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#}
CCCCn1c(O)c(C(C)=NCCCN(CC)CC)c(=O)[nH]c1=O
CCCCn1c(O)c(C(C)=NCCCN(CC)CC)c(=O)[nH]c1=O
1-butyl-5-[N-[3-(diethylamino)propyl]-C-methylcarbonimidoyl]-6-hydroxypyrimidine-2,4-dione