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) Cc1cc(Nc2cncc(N[C@@H](C)c3ncc(F)cn3)n2)n[nH]1
(b) c1cncc(-c2c[nH]c([C@H]3Cc4c([nH]c5ccccc45)[C@@H](C4CCOCC4)N3)n2)c1
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}
2-N-[(1S)-1-(5-fluoropyrimidin-2-yl)ethyl]-6-N-(5-methyl-1H-pyrazol-3-yl)pyrazine-2,6-diamine