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 additional words.
Options:
a. c1ccc(-c2c[nH]c(C3Cc4c([nH]c5ccccc45)C(C4CCOC4)N3)n2)cc1
b. N#C[C@@H]1C[C@H](F)CN1C(=O)[C@@H](N)Cc1cc2c(cc1Br)OCO2
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}
(2S,4S)-1-[(2S)-2-amino-3-(6-bromo-1,3-benzodioxol-5-yl)propanoyl]-4-fluoropyrrolidine-2-carbonitrile