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 CC1(C)[C@H](Nc2c(C(N)=O)cnn3cc(-c4ccccc4F)cc23)CC[C@]1(C)N
b CC(C)Cc1nc2nccnc2n1Cc1cc(=O)[nH]c2c(F)c(F)ccc12
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}
7,8-difluoro-4-[[2-(2-methylpropyl)imidazo[4,5-b]pyrazin-3-yl]methyl]-1H-quinolin-2-one