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: O=C(c1cc(F)cc(F)c1)N1CCN(c2ccc(OCCCN3CCCCCC3)cc2)C(=O)C1
b: Nc1nc(N)c(N=O)c(OCC2CCCCC2)n1
Answer: a, 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}
6-(cyclohexylmethoxy)-5-nitrosopyrimidine-2,4-diamine