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, b, c, or d without using any other words.
Options:
a: COc1ccccc1C(=O)Nc1ccccc1N1CCN(S(C)(=O)=O)CC1
b: O=c1c2cnn(-c3ccccc3Cl)c2ncn1Cc1cccnc1
c: Cc1cccc(N2CCN(C(=O)N3CCCCC3)CC2)c1C
d: Cc1ccc2[nH]c3c(=O)n(CCCN4CCOCC4)cnc3c2c1
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}