Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. Cc1ccc(C)c(OCC(O)CN2CCC(CN3C(=O)c4cccc5cccc(c45)C3=O)CC2)c1.Cl
b. CC(=O)C1=C(O)C(=O)N(c2ccc(O)cc2)C1c1ccccc1[N+](=O)[O-]
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}