Question: What is the highest development stage achieved for this compound across all indications? Please respond with Approved, Phase 3 Clinical Trials, Phase 2 Clinical Trials, Phase 1 Clinical Trials, Early Phase 1 Clinical Trials, or Clinical Phase Unknown.
 The Chemical can be represented with the SMILES O=NN(CCCl)C(=O)NC1CCCCC1.
Result: Approved
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O=NN(CCCl)C(=O)NC1CCCCC1
O=NN(CCCl)C(=O)NC1CCCCC1
1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea
What is the highest development stage achieved for this compound across all indications? Please respond with Approved, Phase 3 Clinical Trials, Phase 2 Clinical Trials, Phase 1 Clinical Trials, Early Phase 1 Clinical Trials, or Clinical Phase Unknown.