Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] O=C(Nc1ccccc1)N(c1ccc(Br)cc1)C1CCN(C2CCCC2)CC1
[b] Cc1nc2ccccc2n1-c1ccc(C(=O)N(C)[C@@H]2CCN(C(C)C)C2)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}
1-(4-bromophenyl)-1-(1-cyclopentylpiperidin-4-yl)-3-phenylurea