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 additional words.
Options:
[a] COC(=O)C1=C(c2cccc(OC)c2OC)C[C@@H]2CC[C@H]1N2C(=O)NC1CCCCC1
[b] CC(=O)c1c(C)[nH]c(C(=O)OCC(=O)Nc2cc(C(F)(F)F)ccc2N2CCOCC2)c1C
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}