Task: Answer the multiple-choice question.
Query: Which compound exhibits a 3.453\% 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, or d without using any other words.
Options:
(a) CCCS(=O)(=O)c1c(S(=O)(=O)CCC)c2c(N)cccn2c1C(=O)c1ccccc1
(b) NNc1nc2ccccc2nc1C(F)(F)F
(c) CCC(CC)CN1C(Nc2ccccc2)=NC[C@@H]1C
(d) O=C(c1ccc([N+](=O)[O-])cc1)N1CCc2ccccc2C1
Answer: c. CCC(CC)CN1C(Nc2ccccc2)=NC[C@@H]1C
{#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#}
CCC(CC)CN1C(Nc2ccccc2)=NC[C@@H]1C
CCC(CC)CN1C(Nc2ccccc2)=NC[C@@H]1C
(5S)-1-(2-ethylbutyl)-5-methyl-N-phenyl-4,5-dihydroimidazol-2-amine