Using CCOC(=O)CCn1cnc2c(N3CCOCC3)nc(Cl)nc21, CC[Mg]Br to produce OC1(CCn2cnc3c(N4CCOCC4)nc(Cl)nc32)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.