Using COC(=O)CCn1c(C)c(Cc2cccnc2)c2cc(/C=C/C(=O)O)ccc21 to produce COC(=O)CCn1c(C)c(Cc2cccnc2)c2cc(CCC(=O)O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.