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] C=CCn1c(SCC(=O)Nc2cccc(S(=O)(=O)N(C)c3ccccc3)c2)nnc1C1CC1
[b] COC(=O)C1=[N+]([O-])OC(C(=O)OC)C1c1c[nH]c2ccccc12
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}