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 additional words.
Options:
a: COc1ccc(N(C)S(=O)(=O)c2cccc(C(=O)OCC(=O)Nc3sc4c(c3C#N)CCCCC4)c2)cc1
b: N#Cc1cnn2c(-c3cccc(C(F)(F)F)c3)ccnc12
Answer: a
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}