Using CCOC(=O)CCCn1c(-c2ccc3c(c2)OCO3)nc2ccccc21 to produce O=C(O)CCCn1c(-c2ccc3c(c2)OCO3)nc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.