Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a) CCCOc1ccc(NC(=O)CC2C(=O)Nc3ccccc3N2CC(=O)N2CCCC2)cc1
b) NC1=NC(=O)C(Cc2ccccc2)S1
c) CC(=O)c1ccc(OC(=O)c2ccc(Br)o2)cc1
d) Cc1ccc(Nc2nc(NCCCN3CCOCC3)nc(N)c2[N+](=O)[O-])cc1
Answer: d
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}