Task: Answer the multiple choice question.
Question: Which compound has a 1.949\% 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: CCOC(=O)N1CCN(c2c(-c3ccccc3)c3cc(Cl)ccc3[nH]c2=O)CC1
b: CCN(CC(=O)NC1CC1)S(=O)(=O)c1ccccc1
c: CC1CCN(CC(=O)Nc2cccc(C(=O)Nc3cccc(C(F)(F)F)c3)c2)CC1
d: O=C(O)C1(c2ccccc2)CC/C(=N/Nc2ccc([N+](=O)[O-])cc2[N+](=O)[O-])C1
Answer: a. CCOC(=O)N1CCN(c2c(-c3ccccc3)c3cc(Cl)ccc3[nH]c2=O)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#}
CCOC(=O)N1CCN(c2c(-c3ccccc3)c3cc(Cl)ccc3[nH]c2=O)CC1
CCOC(=O)N1CCN(c2c(-c3ccccc3)c3cc(Cl)ccc3[nH]c2=O)CC1
ethyl4-(6-chloro-2-oxo-4-phenyl-1H-quinolin-3-yl)piperazine-1-carboxylate