Using Nc1ccc2[nH]nnc2c1, CC(=O)NNc1ccc(OCC(=O)O)cc1 to produce CC(=O)NNc1ccc(OCC(=O)Nc2ccc3[nH]nnc3c2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.