Using CCOC(=O)c1c(N)[nH]c2cc(C(=O)OC)ccc12, NC=O to produce COC(=O)c1ccc2c(c1)[nH]c1ncnc(O)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.