Using CCOC(=O)NNC(=O)NCCCCNC(=O)OCc1ccccc1 to produce O=C(NCCCCn1c(=O)[nH][nH]c1=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.