Using CCOC(=O)N1CCc2ccc3c(c2CC1)C(O)(C1CC1)CC3 to produce CCOC(=O)N1CCc2ccc3c(c2CC1)C(C1CC1)CC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.