Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
[a] COc1ccc(CNC(=O)C2(CC3CC(c4ccccc4)=NO3)CCN(C(=O)C3CCCC3)CC2)cc1
[b] Cc1csc(NC(=O)CSc2nc3nc(C)cc(C)n3n2)n1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}