Problem statement: Answer the multiple choice question.
Query: Which drug exhibits a 3.804\% 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 CNS(=O)(=O)c1cccc(C(=O)OCC(=O)c2cc3ccccc3o2)c1
b CCCCn1c(SCC(N)=O)nc2c(sc3ccccc32)c1=O
c NC(N)=NC(N)=Nc1ccccc1
d Cn1c(SCc2ccc(C#N)cc2Cl)nc2ccccc21
Answer: c. NC(N)=NC(N)=Nc1ccccc1
{#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#}
1-(diaminomethylidene)-2-phenylguanidine