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: COC(=O)C1=C(C)N(Cc2ccccc2)C(=NCCc2ccccn2)N[C@H]1c1cccc(F)c1
b: COc1ccccc1N1Cc2ccc(OC)c(OC)c2C1=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}