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: Cc1ccc(C(=O)C2CCN(CCCc3ccccc3)CC2)cc1
b: O=C(OC1COc2nc([N+](=O)[O-])cn2C1)N1CCN(c2ccc(OC(F)(F)F)cc2)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}
(2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazin-6-yl) 4-[4-(trifluoromethoxy)phenyl]piperazine-1-carboxylate