Using CI, Cn1c(C2(O)CCCN(C(=O)OC(C)(C)C)C2)nc2c(N3CCOCC3)nc(Cl)nc21 to produce COC1(c2nc3c(N4CCOCC4)nc(Cl)nc3n2C)CCCN(C(=O)OC(C)(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.