Using O=C(O)c1cccnc1, CCOCc1nc2c(N)nc3ccccc3c2n1CC(C)(C)OCCN to produce CCOCc1nc2c(N)nc3ccccc3c2n1CC(C)(C)OCCNC(=O)c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.