Task: Answer the MCQ question.
Question: Which drug exhibits a 2.548\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
[a] NC(N)=N/N=C/c1ccccc1Cl
[b] Cc1ccc(NC(=O)c2ccc(OC(=O)c3cc4ccccc4o3)cc2)cc1
[c] O=C(N/N=C/C1CCCCC1)c1ccccc1-n1cccc1
Answer: a. NC(N)=N/N=C/c1ccccc1Cl
{#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#}
NC(N)=N/N=C/c1ccccc1Cl
NC(N)=N/N=C/c1ccccc1Cl
2-[(E)-(2-chlorophenyl)methylideneamino]guanidine