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 other words.
Options:
a: CC[C@]1(c2cccc(C)c2)C(=O)N(C(=O)OC)N1C(=O)OC
b: CCN(CC)CCN(Cc1cc2cccc(C)c2[nH]c1=O)C(=S)Nc1ccccc1
c: Cc1ccc(CCN2C3=NC[C@H](Cc4ccc(O)cc4)N3C[C@@H]2CCCNC(=O)C2CCC2)cc1
d: C=CCOC(=O)C1=C(C)NC(=S)NC1/C=C/c1ccccc1
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}