Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CN1CCC[C@@H](c2nc3ccccc3n2Cc2ccccn2)C1
(b) N[C@H](C(=O)N1CCCC1)C1CCC(NC(=O)c2ccc(OC(F)(F)F)cc2)CC1
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-[(3R)-1-methylpiperidin-3-yl]-1-(pyridin-2-ylmethyl)benzimidazole