Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=C(C=Cc1ccc(CNCCc2c(-c3ccccc3)nn3ccccc23)cc1)NO
[b] COCC1CCCN1C(=O)c1cc(C)cc(C(=O)N[C@@H](Cc2cc(F)cc(F)c2)[C@H](O)[C@H]2C[C@@H](Oc3ccccc3)CN2)c1
Answer: a
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}
N-hydroxy-3-[4-[[2-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)ethylamino]methyl]phenyl]prop-2-enamide