Using CC(C)(C)OC(=O)NCCCn1c(N)c(C(N)=O)c(=O)c2cnc(Nc3ccc(N4CCOCC4)cc3)nc21 to produce NCCCn1c(N)c(C(N)=O)c(=O)c2cnc(Nc3ccc(N4CCOCC4)cc3)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.