Problem statement: Answer the MCQ question.
Question: Which compound has a -1.778\% 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 additional words.
Options:
a. Cc1cccc(C(=O)Nc2cccc(C(=O)Nc3cc(C)ccn3)c2)c1
b. S=C(NC1CCCC1)N1CCN(c2cccc(Cl)c2)CC1
c. CC1(C)N=c2ccc([N+](=O)[O-])c(N)c2=[N+]1[O-]
d. CC(Oc1cccc2c1OC(C)(C)C2)C(=O)O
Answer: c. CC1(C)N=c2ccc([N+](=O)[O-])c(N)c2=[N+]1[O-]
{#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#}
CC1(C)N=c2ccc([N+](=O)[O-])c(N)c2=[N+]1[O-]
CC1(C)N=c2ccc([N+](=O)[O-])c(N)c2=[N+]1[O-]
2,2-dimethyl-5-nitro-3-oxidobenzimidazol-3-ium-4-amine