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 other words.
Options:
a: O=C(Nc1ccccc1)N1CCCC2CCCCC21
b: CCN(CC)CCOCCOc1ccc(Cl)c2ccccc12
c: O=S(=O)(NC1=NCCCCC1)c1cccs1
d: CCCn1nnnc1NC(=O)COc1ccc(Cl)cc1C
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}