Using CCOC(=O)Cn1nnc(-c2cnc(N3CCC4(CC3)OCCO4)s2)n1 to produce CCOC(=O)Cn1nnc(-c2cnc(N3CCC(=O)CC3)s2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.