Task: Please answer the multiple choice question.
Question: Which molecules are not 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: CC(=O)NC(=O)C1CCC(C2N=CC(c3cccc(Br)c3)=N2)CC1
b: CCCCNC(=O)C1c2ccccc2C(=O)N1CC(C)c1ccc(Cl)cc1
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}
N-butyl-2-[2-(4-chlorophenyl)propyl]-3-oxo-1H-isoindole-1-carboxamide