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 other words.
Options:
a) O=Cc1ccc(C(=O)OCC(=O)Nc2ccc(F)cc2F)cc1
b) COC(=O)c1cc(S(=O)(=O)NCC2CCN(Cc3ccc(C)cc3)CC2)c[nH]1
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}