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 other words.
Options:
[a] O=C(c1cc(-c2ccccc2Cl)nc2ccc(Br)cc12)N1CCN(c2ccccn2)CC1
[b] CCOc1cccc2sc(N(CCCN(C)C)C(=O)c3ccc(S(=O)(=O)N(C)CC4CCCO4)cc3)nc12.Cl
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}