Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: O=C(NC1CCN(C2CCc3cc4oc(=O)[nH]c4cc32)CC1)c1cc(=O)c2ccc(F)cc2o1
b: Nc1nnc2c3cc(-c4ccccc4)c(-c4ccc(CN5CCC(c6nnc(-c7ccccn7)[nH]6)CC5)cc4)nc3ccn12
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}
7-fluoro-4-oxo-N-[1-(2-oxo-3,5,6,7-tetrahydrocyclopenta[f][1,3]benzoxazol-5-yl)piperidin-4-yl]chromene-2-carboxamide