Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] CCC(C)[C@H](NC(=O)[C@@H]1CSC2c3ccccc3C(=O)N21)C(=O)NCC1CCCO1
[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}