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. CCOC(=O)N1CCN(C(=O)COC(=O)C2CCN(S(=O)(=O)c3c(C)c(C)cc(C)c3C)CC2)CC1
b. COC(=O)c1[nH]c2cccc(Cl)c2c1NC(=O)CN1CCCCC1C
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}