Using COCCN(c1ccccc1)c1nc(N)nc(-c2noc(-c3ccc(C(=O)OC)nc3)n2)n1 to produce COCCN(c1ccccc1)c1nc(N)nc(-c2noc(-c3ccc(CO)nc3)n2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.