Using CCCOC(=O)Cc1c(CCC(=O)O)[nH]c2ccccc12, C=[N+]=[N-] to produce CCCOC(=O)Cc1c(CCC(=O)C=[N+]=[N-])[nH]c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.