Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocking compound?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] CCOCCCNC(=O)C(NC(=O)CNC(=O)c1ccccc1)c1ccc(OC)cc1
[b] O=C(Nc1nc2ccccc2n1CCN1CCCCC1)c1ccco1
[c] COc1ccc(CNC(=O)Nc2cccc(Cl)c2)cc1
[d] Cn1nc(C(=O)Nc2nc3ccccc3[nH]2)ccc1=O
Answer: b
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}