Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. CC(C)(C)c1cc(C=C(C#N)C#N)cc(Br)c1O
b. N#Cc1ccc(Cn2cncc2CN(CCN2CCOCC2)C2CCN(Cc3cccc(Cl)c3)C2=O)cc1
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-[(3-bromo-5-tert-butyl-4-hydroxyphenyl)methylidene]propanedinitrile