Using CC(O)c1cn(CCN2CCCC2)c(C2CCN(C(=O)OC(C)(C)C)CC2)n1 to produce CCc1cn(CCN2CCCC2)c(C2CCN(C(=O)OC(C)(C)C)CC2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.