Using COCCOC(Cc1ccc(OCCc2ccc(NC(=O)OC(C)(C)C)cc2)cc1)C(=O)OC to produce COCCOC(Cc1ccc(OCCc2ccc(NC(=O)OC(C)(C)C)cc2)cc1)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.