Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: Fc1ccc(C2(c3ccc(F)cc3)CNC(c3cnccn3)=N2)cc1
b: CC(C)(O)c1ccc(C#Cc2cccc(-n3cc(C(=O)NC4CC4)c(=O)c4cccnc43)c2)c[n+]1[O-]
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
2-[4,4-bis(4-fluorophenyl)-1,5-dihydroimidazol-2-yl]pyrazine