Using CCCO, CC(C)(C)OC(=O)N1CCN(Cc2c(O)ccc3c2OCC3=O)CC1 to produce CCCOc1ccc2c(c1CN1CCN(C(=O)OC(C)(C)C)CC1)OCC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.