Using COC(=O)CBr, CCc1cc2c(OC)cc3c(c2n1Cc1ccccc1)CCCC3 to produce CCc1cc2c(OCC(=O)OC)cc3c(c2n1Cc1ccccc1)CCCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.