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. CCOC(=O)C1CCN(C(=O)CCc2c(C)nc3cc(-c4ccccc4)nn3c2C)CC1
b. COc1cc2[nH]c3c(N4CCN(c5ccc(Cl)cc5)CC4)ncnc3c2cc1OC
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}