Using c1c[nH]cn1, ClCCc1nc(-c2ccc3c(c2)OCO3)c2cc3c(cc2n1)OCO3 to produce c1cn(CCc2nc(-c3ccc4c(c3)OCO4)c3cc4c(cc3n2)OCO4)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.