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, c, or d without using any additional words.
Options:
a: O=C(CCCc1ccccc1)N1CCN(C2CCCCC2)CC1
b: Cc1cc(-c2nnc3n2N=C(c2ccccc2)CS3)n[nH]1
c: Cc1c(NC2(C#N)CCCCC2)c(=O)n(-c2ccccc2)n1C
d: COn1c(C)c(C(C)=O)c2c3no[n+]([O-])c3ccc21
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}