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) CCn1nnc(CN2CCN(C(=O)c3ccc(C[C@@H]4CC[C@H]([C@H](O)c5ccccc5)N4)cc3)CC2)n1
(b) c1ccc(-c2c[nH]c([C@H]3Cc4c([nH]c5ccccc45)[C@H](C4CCOCC4)N3)n2)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}
[4-[(2-ethyltetrazol-5-yl)methyl]piperazin-1-yl]-[4-[[(2S,5R)-5-[(R)-hydroxy(phenyl)methyl]pyrrolidin-2-yl]methyl]phenyl]methanone