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. C[C@@H](c1ccc(-c2ccc(F)cc2F)cc1)N1CC[C@](CCO)(c2ccc(F)cc2)OC1=O
b. O[C@H](COc1ccc(Cl)cc1)CN1CCN(Cc2c(F)cccc2Cl)CC1
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}
(6S)-3-[(1S)-1-[4-(2,4-difluorophenyl)phenyl]ethyl]-6-(4-fluorophenyl)-6-(2-hydroxyethyl)-1,3-oxazinan-2-one