Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocking compound?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CC(=O)Nc1ccc(Cl)c(C(=O)Nc2cccc(C)n2)c1
(b) O=C(Nc1ccc(N2CCN(C(=O)c3ccc(Cl)cc3)CC2)cc1)c1ccc(Br)o1
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}