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) COc1ccc2ncc(F)c(C[C@H](O)C3CCC(NCc4nc5c(cc4F)OCC(=O)N5)CO3)c2n1
b) N[C@@H]1CCCN(c2c(Br)cccc2C=C2SC(O)=NC2=O)C1
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}
5-[[2-[(3R)-3-azanylpiperidin-1-yl]-3-bromanyl-phenyl]methylidene]-2-oxidanyl-1,3-thiazol-4-one