Task: Please answer the multiple choice question.
Question: Which molecules are not 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. COC(=O)C1=CC[C@@H]2CC[C@@H]1[NH+]2C
b. COc1cc2c(Oc3ccc4[nH]c(C)c(C)c4c3)ncnc2cc1OCCN1CCN(CC(C)=O)CC1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
methyl(1S,5S)-8-methyl-8-azoniabicyclo[3.2.1]oct-2-ene-2-carboxylate