Using CCOC(=O)c1ccc(NC=O)c(C(=O)CCNC(=O)OC(C)(C)C)c1, NO to produce CCOC(=O)c1ccc(N)c(C(CCNC(=O)OC(C)(C)C)=NO)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.