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(Nc1ccc(Cl)cn1)[C@H]1CN(CC(F)F)C[C@@H]1C(=O)Nc1ccc(-n2ccccc2=O)cc1F
b N#Cc1ccc(CCN2CCN(CCc3ccc4c(c3)COC4=O)CC2)cc1Br
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}
(3R,4R)-3-N-(5-chloropyridin-2-yl)-1-(2,2-difluoroethyl)-4-N-[2-fluoro-4-(2-oxopyridin-1-yl)phenyl]pyrrolidine-3,4-dicarboxamide