Using CCOC(=O)Cl, NC(=O)N1c2ccccc2CC(=NO)c2ccccc21 to produce CCOC(=O)ON=C1Cc2ccccc2N(C(N)=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.