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 other words.
Options:
a.) O=C(O)c1ccccc1OC(=O)C12CC3CC(CC(C3)C1)C2
b.) COc1ccc(C(=O)Nc2nc(CC(=O)NCCc3ccccc3OC)cs2)cc1
c.) CCCC(=O)c1ccc(-c2ccccc2)cc1
d.) Cc1ccc(-n2c(-c3ccc(Cl)cc3)c[n+]3c2CCC3)cc1.[Br-]
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}