Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CCOc1cc(CN2CCN(CCc3ccccc3)C(CCO)C2)ccc1OC
b: O=C1CC(c2ccc(Cl)cc2)n2nc(NS(=O)(=O)c3ccc(F)cc3)nc2N1
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}