Task: Answer the MCQ question.
Question: Which drug exhibits a -4.891\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a Cc1ccccc1Cn1c(=O)n(CCCC(=O)NCc2ccco2)c(=O)c2ccccc21
b O=C(N/C(=C\c1ccc(Br)cc1)C(=O)N1CCCC1)c1ccccc1F
c CCOC(=O)N1CCN(C(=O)c2ccccc2CCc2ccccc2)CC1
d CSC(=O)NC(=O)NC(=O)c1ccc([N+](=O)[O-])cc1
Answer: c. CCOC(=O)N1CCN(C(=O)c2ccccc2CCc2ccccc2)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#}
ethyl 4-[2-(2-phenylethyl)benzoyl]piperazine-1-carboxylate