Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] O=C(c1nnc(-c2ccc(OC(F)F)cc2)o1)N1CCC(Oc2ccc(CN3CCCC3)cc2)CC1
[b] O=C(NCc1ccccc1)N(c1ccc(Br)cc1)C1CCN(Cc2ccnnc2)CC1
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}
3-benzyl-1-(4-bromophenyl)-1-[1-(pyridazin-4-ylmethyl)piperidin-4-yl]urea