Task: Answer the MCQ question.
Question: Which drug has a 15.557\% 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 CCN(CC)S(=O)(=O)c1ccc(OC)c(NC(=O)C2CC(=O)N(c3ccc(C)cc3)C2)c1
b Cc1cc(C)c(NC(=S)N2CCN(c3ccc([N+](=O)[O-])cn3)CC2)cc1C
c Cc1cnc(Sc2ncccc2[N+](=O)[O-])nc1
d CCC1=[N+](C)c2cccc3cccc(c23)N1C.[I-]
Answer: d. CCC1=[N+](C)c2cccc3cccc(c23)N1C.[I-]
{#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#}
CCC1=[N+](C)c2cccc3cccc(c23)N1C.[I-]
CCC1=[N+](C)c2cccc3cccc(c23)N1C.[I-]
2-ethyl-1,3-dimethylperimidin-3-ium;iodide