Task: Answer the MCQ question.
Question: Which compound exhibits a 4.915\% 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 additional words.
Options:
a: O=[N+]([O-])c1ccc2c(c1)nc1n2CCCCC1
b: CN1C(C)(C)CCCC1(C)C.O=C(O)C(O)C(O)C(=O)O
c: CCN(CC)CCn1c(=N)n(CC(O)c2ccc(OC)c(OC)c2)c2ccccc21.Cl
d: Cn1cccc1CC(=O)N/N=C/c1cccc([N+](=O)[O-])c1
Answer: a. O=[N+]([O-])c1ccc2c(c1)nc1n2CCCCC1
{#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#}
O=[N+]([O-])c1ccc2c(c1)nc1n2CCCCC1
O=[N+]([O-])c1ccc2c(c1)nc1n2CCCCC1
oxido-oxo-(7,8,9,10-tetrahydro-6H-azepino[1,2-a]benzimidazol-3-yl)azanium