Using COc1ccc2c(OCCn3cc(C4C=CCCO4)ccc3=O)ccnc2c1 to produce COc1ccc2c(OCCn3cc(C4CCCCO4)ccc3=O)ccnc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.