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 other words.
Options:
a) NC1=N[C@@]2(c3ccc(F)cc3F)CO[C@@H](c3ncco3)C[C@H]2CS1
b) CCN(CC)C(=O)c1ccc(C(=C2CCN(Cc3ccc(F)cc3)CC2)c2cccnc2)cc1
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}
(4aR,6R,8aS)-8a-(2,4-difluorophenyl)-6-(1,3-oxazol-2-yl)-4a,5,6,8-tetrahydro-4H-pyrano[3,4-d][1,3]thiazin-2-amine