Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (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=C1COc2ccc(-c3csc(NCCc4ccccc4)n3)cc2N1
b.) CCCc1cnc(N2CCN(C(=O)c3ccccc3)CC2)nc1
c.) O=C(c1ccco1)N1CCN(C(=O)c2sccc2-c2ccccc2)CC1
d.) COc1ccc(CCN2C(=O)CC(N3CCN(c4ccccn4)CC3)C2=O)cc1OC
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}