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, b, or c without using any additional words.
Options:
a. O=c1c2ccccc2nnn1CSc1nc2ccccc2[nH]1
b. CCCCNCCCOc1cc(Cl)ccc1Cl.O=C(O)C(=O)O
c. Fc1ccc(C(c2nnnn2Cc2cccs2)N2CCN(c3ccccc3)CC2)cc1
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}