Using O=c1oc(=O)n2c3c(cc([N+](=O)[O-])cc13)OCC2, CCOC(=O)CC(=O)OCC to produce CCOC(=O)c1c(O)c2cc([N+](=O)[O-])cc3c2n(c1=O)CCO3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.