Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) O=C([O-])CCc1nc(-c2ccccc2)c(-c2ccccc2)o1
b) Cc1ccc(-c2nc(NC(=O)CC3CCN(C)CC3)cc(-n3nccc3C)n2)o1
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-(4,5-diphenyl-1,3-oxazol-2-yl)propanoate