Using COC(=O)c1ccc(N2CCOCC2)cc1OCCCNC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)NCCCOc1cc(N2CCOCC2)ccc1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.