Using O=c1c(Cc2cccnc2)cn2c3cc(Br)ccc3c3cc(O)cc1c32, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)COc1cc2c(=O)c(Cc3cccnc3)cn3c4cc(Br)ccc4c(c1)c23, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.