Task: Please answer the multiple choice question.
Question: Which molecules are not a hERG blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. COc1cnc2ccc(=O)n(C[C@H](N)C3CCC(NCc4ccc5c(n4)NC(=O)CO5)CC3)c2c1
b. CCCOCCn1c(=O)c(N2CCN(C[C@H](C)O)CC2)nc2cnc(-c3ccc(OC)nc3)cc21
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}
6-[[[4-[(1R)-1-amino-2-(7-methoxy-2-oxo-1,5-naphthyridin-1-yl)ethyl]cyclohexyl]amino]methyl]-4H-pyrido[3,2-b][1,4]oxazin-3-one