Using Sc1nc(-c2ccc3c(c2)OCO3)c(-c2ccc3c(c2)OCO3)[nH]1, BrCCBr to produce c1cc2c(cc1-c1nc3n(c1-c1ccc4c(c1)OCO4)CCS3)OCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.