Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a.) CC(=O)N1CCc2cc(Br)cc(S(=O)(=O)N3CCc4ccccc43)c21
b.) N#CC1=C(Nc2ccccc2)SC=C(c2ccc(Cl)c(Cl)c2)N=C1N1CCOCC1
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}