Using COCCOCc1nc(CBr)cs1, COc1cc(O)c2cc(-c3cn4nc(OC)sc4n3)oc2c1 to produce COCCOCc1nc(COc2cc(OC)cc3oc(-c4cn5nc(OC)sc5n4)cc23)cs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.