Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocking compound?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: N#Cc1ccc(Cn2cncc2C[NH2+][C@H]2CCN(C(=O)c3cccnc3[O-])C2=O)cc1
b: CC[NH+](CC)CCC[C@@H](C)Nc1ccnc2cc(Cl)ccc12
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}