Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: CCCS(=O)(=O)c1c(S(=O)(=O)CCC)c2c(N)cccn2c1C(=O)c1ccc(F)cc1
b: COCCNC(=O)c1cn(C)c2ccc(S(=O)(=O)N3CCCCC3)cc2c1=O
Answer: a, 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}