Using CCOC(=O)Cn1cc(-c2cnc(N)c3oc(Cl)cc23)cn1, OB(O)c1cccc2cnccc12 to produce CCOC(=O)Cn1cc(-c2cnc(N)c3oc(-c4cccc5cnccc45)cc23)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.