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, b, c, or d without using any additional words.
Options:
a: Cc1ccc(NC(=O)CN2CCN(CCN=CC3=C(O)CC(c4ccccc4)CC3=O)CC2)cc1
b: CC12CN3CC(C)(CN(C1)C3c1ccccc1Cl)C2O
c: COc1ccc(-c2noc(CCN3C(=O)c4ccccc4C3=O)n2)cc1OC
d: COc1cc(NC(=O)CN(C)S(=O)(=O)c2ccc3c(c2)CC(C)N3C(C)=O)cc(OC)c1
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}