Using COc1ccc(Cn2c(=O)c(-c3cccs3)c(OCC3CCOCC3)c3cc(Br)ccc32)cc1 to produce O=c1[nH]c2ccc(Br)cc2c(OCC2CCOCC2)c1-c1cccs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.