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: CCCC1=C(C(=O)OCC)C(c2c(C)nn(-c3ccccc3)c2Cl)C(C#N)=C(N)O1
b: CCOc1ccc(C(=O)C(C)OC(=O)Cn2c(C)csc2=O)cc1
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}