Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound (IC50 less than 10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] Cc1ccc2nc3c(cc(C(=O)NCc4ccco4)c(=N)n3Cc3ccco3)c(=O)n2c1
[b] CCC(=NCc1ccco1)c1c(O)n(-c2ccc(OC)cc2)c(=O)[nH]c1=O
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}