Using CC(C)(C)OC(=O)N1CCCC1c1cc(C(=O)N2CCOCC2)cc2c(=O)cc(N3CCOCC3)oc12 to produce O=C(c1cc(C2CCCN2)c2oc(N3CCOCC3)cc(=O)c2c1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.