Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) CC(C)[C@H](NC(=O)C1CCN(S(=O)(=O)c2ccccc2)CC1)C(=O)NCc1ccc(F)cc1
(b) O=C(Nc1ccc(Cc2ccncc2)cc1)c1ccc(N2CCOCC2)c([N+](=O)[O-])c1
Answer: b
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}