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, or d without using any additional words.
Options:
a CCOC(=O)c1c(C)cc2nc(COC(=O)NC)n(-c3ccccc3Cl)c(=O)c2c1C
b COc1nc(C)nc(NC(=O)NS(=O)(=O)c2ccccc2Cl)n1
c OC1(c2ccc(F)cc2)c2ccccc2C2=NCCN21
d O=c1oc2ccccc2c(O)c1Cc1c(O)c2ccccc2oc1=O
Answer: d
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}