Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocking compound (IC50 less than 10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. Cc1cccc(N2CCN(CCCNC(=O)C3CCCN(c4ncnc5c4nc4n5CCCCC4)C3)CC2C)c1
b. COc1ccc(Cl)cc1C(=O)N1CCN(c2ccccn2)CC1
Answer: b
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}