Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. CN(CCO)C(=O)N1CC(c2cc(F)ccc2F)=C[C@H]1c1cccc(O)c1
b. NC(=O)NOC[C@H]1NC(=O)NC1=O
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
[(4R)-2,5-dioxoimidazolidin-4-yl]methoxyurea