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=c1ccn2c(-c3ccc(F)cc3F)cccc2c1-c1c(F)cccc1F
b. CCc1cc(N2CCN(CCc3ccc(OCCCN4CCCCCC4)cc3)CC2)c2nc(CCC(=O)O)ccc2c1
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-(2,4-difluorophenyl)-1-(2,6-difluorophenyl)quinolizin-2-one