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(c1ccc(F)cc1F)N1CCN(c2ccc(OCCCN3CCCCC3)cc2)C(=O)C1
b) CC(C)CN(C(=O)c1cccc(C(F)(F)F)c1Cl)[C@H]1CCNC1
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-(2,4-difluorobenzoyl)-1-[4-(3-piperidin-1-ylpropoxy)phenyl]piperazin-2-one