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 other words.
Options:
a. NC(=O)Nc1cc(-c2cccc(F)c2)sc1C(=O)NC1CCCNC1
b. O=C(N[C@H]1CCCC[C@@H]1O)c1cc(CN2CCN(c3cc4ccccc4cn3)CC2)c2ccccn2c1=O
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}
3-(carbamoylamino)-5-(3-fluorophenyl)-N-piperidin-3-ylthiophene-2-carboxamide