Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a -16.754\% 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) CC(Oc1ccc2oc3ccccc3c2c1)C(=O)NC12CC3CC(CC(C3)C1)C2
(b) CCc1noc(C)c1C(=O)NNC(=O)c1ccccc1Cl
(c) C=CCOCCN(CC)CC
(d) CSc1ccccc1NC(=O)Cn1nc([N+](=O)[O-])c(Cl)c1C
Answer: c. C=CCOCCN(CC)CC
{#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#}
C=CCOCCN(CC)CC
C=CCOCCN(CC)CC
N,N-diethyl-2-prop-2-enoxyethanamine