Using CCOc1cc2c(cc1Br)C(C(C)C)=CCC2(C)C, C=C(OCC)[Sn](CCCC)(CCCC)CCCC to produce CCOc1cc2c(cc1C(C)=O)C(C(C)C)=CCC2(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.