Using CC(=O)Nc1ncc(-c2ccc3c(c2)CN(C(=O)OC(C)(C)C)CCO3)s1 to produce CC(=O)Nc1ncc(-c2ccc3c(c2)CNCCO3)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.