Task: Please answer the multiple choice question.
Question: Which molecules are not a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) CC1(C)[C@H](Nc2c(C(N)=O)cnn3cc(-c4ccnc(F)c4)cc23)CC[C@]1(C)N
b) CS(=O)(=O)Nc1ccc(OC[C@@H](O)CNCCc2ccc(Cl)cc2)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}
4-[[(1R,3S)-3-amino-2,2,3-trimethylcyclopentyl]amino]-6-(2-fluoropyridin-4-yl)pyrrolo[1,2-b]pyridazine-3-carboxamide