Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
[a] COc1ccc2c(c1)[C@]13CCCC[C@@H]1[C@H](C2)N(C)CC3
[b] CCN(CC)CC(=O)Nc1c(C)cccc1C
[c] C[NH+](C)CC/C=C1/c2ccccc2COc2ccccc21
Answer: a, c
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}