Using CCOC(=O)CCCCCCn1c(C2CC2)cc2nc(-c3ccccc3)c(-c3ccccc3)nc21 to produce O=C(O)CCCCCCn1c(C2CC2)cc2nc(-c3ccccc3)c(-c3ccccc3)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.