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 or b without using any other words.
Options:
[a] COc1ccc(CN2CCC(n3nccc3NC(=O)CCCc3ccccc3)CC2)cc1C
[b] CC1CC(C)CN(C(=O)c2cccc(S(=O)(=O)Nc3cc(C(F)(F)F)ccc3Cl)c2)C1
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}