Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a) O=C(O)CN(CP(=O)(O)O)CP(=O)(O)O
b) COc1ccc2c(c1)c(CC(=O)OCC(C(=O)O)c1ccccc1)c(C)n2C(=O)c1ccc(Cl)cc1
c) OCC(CO)(CBr)CBr
d) CC(CC=O)CC=O
e) CCn1c(C)cc(=NC(=O)c2ccccc2O)n1-c1ccccc1
Answer: c
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}