Using C1CCC2=NCCCN2CC1, CCOC(=O)c1cn(N)c(C(=O)OCC)c1C to produce CCOC(=O)c1cn2[nH]cc(C#N)c(=O)c2c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.