Task: Answer the multiple choice question.
Query: Which drug has a -18.424\% 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 other words.
Options:
a.) COc1cccc(-c2c(C(=O)N/N=C/c3ccco3)nnn2-c2nonc2N)c1
b.) Cc1nc(N2CCC(C)CC2)c2c(C)c(C(=O)Nc3cc(F)ccc3C)sc2n1
c.) CN(C)C(=O)c1coc2nc3ccccc3nc12
d.) CCN1CCN(c2nc(N)c([N+](=O)[O-])c(Nc3cccc(C)c3)n2)CC1
Answer: d. CCN1CCN(c2nc(N)c([N+](=O)[O-])c(Nc3cccc(C)c3)n2)CC1
{#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#}
CCN1CCN(c2nc(N)c([N+](=O)[O-])c(Nc3cccc(C)c3)n2)CC1
CCN1CCN(c2nc(N)c([N+](=O)[O-])c(Nc3cccc(C)c3)n2)CC1
2-(4-ethylpiperazin-1-yl)-4-N-(3-methylphenyl)-5-nitropyrimidine-4,6-diamine